67 results on '"V. Aytekin"'
Search Results
2. The impact of TFPI on coronary atherosclerotic burden
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Refik Erdim, F Helvacioglu, Volkan Sozer, Saide Aytekin, Demet Günay, Serkan Kahraman, Ali Dogan, and V Aytekin
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Male ,0301 basic medicine ,Economics and Econometrics ,medicine.medical_specialty ,Lipoproteins ,Statistics as Topic ,Coronary Artery Disease ,Positive correlation ,Carotid Intima-Media Thickness ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,Tissue factor pathway inhibitor ,Internal medicine ,Materials Chemistry ,Media Technology ,medicine ,Humans ,Prospective Studies ,cardiovascular diseases ,Endothelial dysfunction ,Normal coronary arteries ,business.industry ,Forestry ,Middle Aged ,medicine.disease ,Vasodilation ,030104 developmental biology ,Intima-media thickness ,030220 oncology & carcinogenesis ,cardiovascular system ,Cardiology ,Female ,Endothelium, Vascular ,Negative correlation ,business - Abstract
OBJECTIVES We aimed to associate a coronary artery disease (CAD) presence and severity with endothelial dysfunction (ED), carotid intima media thickness (CIMT) and Tissue Factor Pathway Inhibitor (TFPI). BACKGROUND ED has a central role in atherosclerosis. CIMT and TFPI activity are also related with atherosclerosis and CAD. METHODS In our prospective observational study, 50 patients had CAD and 30 had normal coronary arteries. Endothelial function was evaluated by endothelium-dependent flow-mediated dilatation (FMD) and nitroglycerine-mediated dilatation (NMD) measurements. CIMT and Serum TFPI levels were also measured. RESULTS TFPI was a statistically significant determinant between the two groups with an increased level in CAD (+) group (84.9 ± 19.3 vs 70.2 ± 14.7, p = 0.001). There was a positive correlation between CIMT and Gensini (r = 0.34, p = 0.014). There was a strong negative correlation between Gensini and FMD-NMD, statistically significant (FMD: r = -0.715, p < 0.001; NMD: r = -0.718, p < 0.001). CONCLUSION We observed that ED, increased CIMT and TFPI levels were associated with CAD. Additionally, increased CIMT measurements and decreased FMD and NMD values had a positive correlation with GSS (Tab. 4, Fig. 6, Ref. 50).
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- 2018
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3. Impact of gender and diabetes on the relationship between lipoprotein (a) and coronary artery disease
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V. Aytekin, O.U. Guler, B.O. Cunedioglu, Dilek Ural, E. Gursoy, E. Yurtseven, S.M. Aytekin, and Kemal Baysal
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Coronary artery disease ,medicine.medical_specialty ,biology ,business.industry ,Internal medicine ,Diabetes mellitus ,biology.protein ,Cardiology ,Medicine ,Lipoprotein(a) ,Cardiology and Cardiovascular Medicine ,business ,medicine.disease - Published
- 2021
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4. Gender difference in the relation of serum lipoprotein (a) to reduced renal function in diabetic and non-diabetic patients
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O.U. Guler, B.O. Cunedioglu, E. Gursoy, Kemal Baysal, Dilek Ural, S.M. Aytekin, V. Aytekin, and E. Yurtseven
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medicine.medical_specialty ,Endocrinology ,biology ,business.industry ,Internal medicine ,medicine ,biology.protein ,Renal function ,Lipoprotein(a) ,Cardiology and Cardiovascular Medicine ,business ,Non diabetic - Published
- 2021
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5. Poster Session 4: Friday 9 December 2011, 14:00-18:00 * Location: Poster Area
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M. Wang, G. Yan, W. Yue, C. Siu, H. Tse, A. Perperidis, D. Cusack, A. White, T. Macgillivray, W. Mcdicken, T. Anderson, V. Ryabov, V. Shurupov, T. Suslova, V. Markov, N. Elmstedt, K. Ferm Widlund, B. Lind, L.-A. Brodin, M. Westgren, F. Mantovani, A. Barbieri, F. Bursi, C. Valenti, M. Quaglia, M. Modena, D. Peluso, D. Muraru, L. Dal Bianco, M. Beraldo, E. Solda', M. Tuveri, U. Cucchini, A. Al Mamary, L. Badano, S. Iliceto, A. Goncalves, C. Almeria, P. Marcos-Alberca, G. Feltes, R. Hernandez-Antolin, H. Rodriguez, L. Maroto, J. Silva Cardoso, C. Macaya, J. Zamorano, S. Squarciotta, F. Innocenti, A. Guzzo, S. Bianchi, D. Lazzeretti, E. De Villa, S. Vicidomini, B. Del Taglia, C. Donnini, R. Pini, C. Mennie, A. M. Salmasi, V. Kutyifa, V. Nagy, E. Edes, A. Apor, B. Merkely, S. Nyrnes, L. Lovstakken, H. Torp, B. Haugen, K. Said, A. Shehata, Z. Ashour, S. El-Tobgy, M. Cameli, E. Bigio, M. Lisi, F. Righini, F. Franchi, S. Scolletta, S. Mondillo, E. Gayat, L. Weinert, C. Yodwut, V. Mor-Avi, R. Lang, N. Hrynchyshyn, N. Kachenoura, B. Diebold, R. Khedim, M. Senesi, A. Redheuil, E. Mousseaux, L. Perdrix, S. Yurdakul, V. Erdemir, Y. Tayyareci, K. Memic, O. Yildirimturk, V. Aytekin, M. Gurel, S. Aytekin, L. Gargani, C. Fernandez Cimadevilla, S. La Falce, P. Landi, E. Picano, R. Sicari, M. K. Smedsrud, J. Gravning, C. Eek, L. Morkrid, H. Skulstad, L. Aaberge, B. Bendz, J. Kjekshus, T. Edvardsen, G. Bajraktari, V. Hyseni, B. Morina, A. Batalli, R. Tafarshiku, R. Olloni, M. Henein, O. Mjolstad, S. Snare, L. Folkvord, F. Helland, O. Haraldseth, A. Grimsmo, M. Berry, O. Zaghden, J. Nahum, L. Macron, O. Lairez, T. Damy, A. Bensaid, J. Dubois Rande, P. Gueret, P. Lim, N. Nciri, Z. Issaoui, C. Tlili, I. Wanes, H. Foudhil, F. Dachraoui, J. Grapsa, D. Dawson, P. Nihoyannopoulos, L. Gianturco, M. Turiel, F. Atzeni, P. Sarzi-Puttini, D. Stella, L. Donato, L. Tomasoni, P. Jung, M. Mueller, T. Huber, G. Sevilmis, F. Kroetz, H. Sohn, V. Panoulas, A. Bratsas, R. Raso, G. Tartarisco, G. Pioggia, P. Gargiulo, M. Petretta, A. Cuocolo, M. Prastaro, C. D'amore, E. Vassallo, G. Savarese, C. Marciano, S. Paolillo, P. Perrone Filardi, C. Aggeli, I. Felekos, G. Roussakis, E. Poulidakis, P. Pietri, K. Toutouzas, C. Stefanadis, A. Kaladaridis, I. Skaltsiotis, G. Kottis, D. Bramos, D. Takos, I. Matthaios, I. Agrios, E. Papadopoulou, S. Moulopoulos, S. Toumanidis, P. Carrilho-Ferreira, N. Cortez-Dias, C. Jorge, D. Silva, J. Silva Marques, R. Placido, L. Santos, S. Ribeiro, M. Fiuza, F. Pinto, V. Stoickov, S. Ilic, M. Deljanin Ilic, W. Kim, J. Woo, J. Bae, K. Kim, M. Descalzo, J. Rodriguez, S. Moral, I. Otaegui, P. Mahia, L. Garcia Del Blanco, T. Gonzalez Alujas, J. Figueras, A. Evangelista, D. Garcia-Dorado, M. Takeuchi, K. Kaku, K. Otani, M. Iwataki, H. Kuwaki, N. Haruki, H. Yoshitani, Y. Otsuji, M. Kukucka, M. Pasic, A. Unbehaun, S. Dreysse, A. Mladenow, H. Kuppe, R. Hetzer, N. Rajamannan, A. Tanrikulu, L. Kristiansson, S. Gustafsson, K. Lindmark, M. Y. Henein, C. Evdoridis, P. Stougiannos, M. Thomopoulos, M. Fosteris, P. Spanos, G. Sionis, D. Giatsios, A. Paschalis, C. Sakellaris, A. Trikas, Z. Y. Yong, K. Boerlage-Van Dijk, K. Koch, M. Vis, B. Bouma, J. Piek, J. Baan, L. Abid, Z. Frikha, K. Makni, N. Maazoun, D. Abid, M. Hentati, S. Kammoun, P. Barbier, A. Staron, C. Cefalu', G. Berna, P. Gripari, D. Andreini, G. Pontone, M. Pepi, L. Ring, B. Rana, S. Ho, F. Wells, A. Dogan, O. Karaca, G. Guler, E. Guler, H. Gunes, E. Alizade, H. Agus, G. Gol, O. Esen, A. Esen, M. Turkmen, E. Agricola, G. Ingallina, M. Ancona, S. Maggio, M. Slavich, V. Tufaro, M. Oppizzi, A. Margonato, C. Orsborne, B. Irwin, K. Pearce, S. Ray, C. Garcia Alonso, N. Vallejo, C. Labata, J. Lopez Ayerbe, A. Teis, E. Ferrer, R. Nunez Aragon, F. Gual, M. Pedro Botet, A. Bayes Genis, C. M. Santos, M. Carvalho, M. Andrade, H. Dores, S. Madeira, G. Cardoso, A. Ventosa, C. Aguiar, R. Ribeiras, M. Mendes, M. Petrovic, G. Milasinovic, B. Vujisic-Tesic, I. Nedeljkovic, D. Zamaklar-Trifunovic, I. Petrovic, G. Draganic, M. Banovic, M. Boricic, H. Villarraga, C. Molini-Griggs Bs, P. Silen-Rivera Bs, B. Payne Mph Ms, Y. Koshino Md Phd, J. Hsiao Md, V. Monivas Palomero, S. Mingo Santos, C. Mitroi, I. Garcia Lunar, P. Garcia Pavia, V. Castro Urda, J. Toquero, J. Gonzalez Mirelis, M. Cavero Gibanel, I. Fernandez Lozano, Z. Oko-Sarnowska, H. Wachowiak-Baszynska, A. Katarzynska-Szymanska, O. Trojnarska, S. Grajek, D. Bellavia, P. Pellikka, A. Dispenzieri, J. K. Oh, V. Polizzi, F. Pitrolo, F. Musumeci, F. Miller, R. Ancona, S. Comenale Pinto, P. Caso, S. Severino, C. Cavallaro, F. Vecchione, A. D'onofrio, R. Calabro', A. M. Maceira Gonzalez, C. Ripoll, J. Cosin-Sales, B. Igual, J. Salazar, V. Belloch, J. Cosin-Aguilar, B. Pinamonti, A. Iorio, M. Bobbo, M. Merlo, G. Barbati, L. Massa, G. Faganello, A. Di Lenarda, G. F. Sinagra, T. Ishizu, Y. Seo, M. Enomoto, Y. Kameda, N. Ishibashi, M. Inoue, K. Aonuma, A. Saleh, A. Matsumori, H. Negm, H. Fouad, A. Onsy, E. Hamodraka, I. Paraskevaidis, M. Kallistratos, V. Lezos, T. Zamfir, C. Manetos, D. Mavropoulos, L. Poulimenos, D. Kremastinos, A. Manolis, R. Citro, F. Rigo, Q. Ciampi, M. Patella, G. Provenza, C. Zito, E. Tagliamonte, F. Rotondi, F. Silvestri, E. Bossone, P. Beltran Correas, C. Gutierrez Landaluce, M. Gomez Bueno, J. Segovia Cubero, C. Beladan, F. Matei, B. Popescu, A. Calin, M. Rosca, A. Boanta, R. Enache, O. Savu, C. Usurelu, C. Ginghina, A. O. Ciobanu, R. Dulgheru, S. Magda, R. Dragoi, M. Florescu, D. Vinereanu, S. Robalo Martins, C. Calisto, S. Goncalves, I. Barrigoto, J. Carvalho De Sousa, A. Almeida, A. Nunes Diogo, L. Sargento, M. Satendra, C. Sousa, N. Lousada, R. Palma Reis, V. Schiano Lomoriello, R. Esposito, A. Santoro, R. Raia, P. Schiattarella, E. Dores, M. Galderisi, N. Mansencal, V. Caille, A. Dupland, S. Perrot, K. Bouferrache, A. Vieillard-Baron, R. Jouffroy, P. Moceri, E. Liodakis, M. Gatzoulis, W. Li, K. Dimopoulos, M. Sadron, P. E. Seguela, B. Arnaudis, Y. Dulac, T. Cognet, P. Acar, Y. Shiina, H. Uemura, K. Kupczynska, J. Kasprzak, B. Michalski, P. Lipiec, V. Carvalho, A. M. G. Almeida, C. David, J. Marques, P. Ferreira, M. Amaro, P. Costa, A. Diogo, V. Tritakis, I. Ikonomidis, J. Lekakis, S. Tzortzis, N. Kadoglou, I. Papadakis, P. Trivilou, C. Koukoulis, M. Anastasiou-Nana, T. Bombardini, S. Gherardi, G. Arpesella, M. Maccherini, W. Serra, G. Magnani, R. Del Bene, E. Pasanisi, U. Startari, L. Panchetti, A. Rossi, M. Piacenti, M. Morales, I. El Hajjaji, R. El Mahmoud, F. Digne, O. Dubourg, G. Agoston, A. Moreo, L. Pratali, A. Moggi Pignone, A. Pavellini, M. Doveri, F. Musca, A. Varga, F. Faita, S. Rimoldi, C. Sartori, Y. Alleman, C. Salinas Salmon, M. Villena, U. Scherrer, R. Baptista, S. Serra, G. Castro, R. Martins, M. Salvador, P. Monteiro, J. Silva, L. Szudi, A. Temesvary, B. Fekete, I. Kassai, L. Szekely, S. S. Abdel Moneim, M. Martinez, S. Mankad, M. Bernier, A. Dhoble, K. Chandrasekaran, J. Oh, S. Mulvagh, G. R. Hong, J. Y. Kim, S. C. Lee, S. H. Choi, I. S. Sohn, H. S. Seo, J. H. Choi, K. I. Cho, S. J. Yoon, S. J. Lim, P. Wejner-Mik, J. Kusmierek, A. Plachcinska, R. Szuminski, S. Stoebe, A. Tarr, T. Trache, A. Hagendorff, C. Jenkins, H. Kuhl, H. Nesser, T. Marwick, A. Franke, J. Niel, L. Sugeng, S. Soderberg, P. Lindqvist, J. Necas, S. Kovalova, S. K. Saha, A. Kiotsekoglou, R. Toole, S. Govind, A. Gopal, M.-S. Amzulescu, A. Florian, J. Bogaert, S. Janssens, J. Voigt, V. Parisi, M. Losi, L. Parrella, C. Contaldi, E. Chiacchio, A. Caputi, A. Scatteia, A. Buonauro, S. Betocchi, R. Rimbas, S. Mihaila, M. Caputo, R. Navarri, P. Innelli, R. Urselli, E. Capati, P. Ballo, F. Furiozzi, R. Favilli, R. Lindquist, A. Miller, C. Reece, P. O'leary, F. Cetta, B. W. Eidem, M. Cikes, H. Gasparovic, B. Bijnens, V. Velagic, T. Kopjar, B. Biocina, D. Milicic, A. Ta-Shma, A. Nir, Z. Perles, S. Gavri, J. Golender, A. Rein, G. Pinnacchio, L. Barone, I. Battipaglia, A. Cosenza, L. Marinaccio, I. Coviello, G. Scalone, A. Sestito, G. Lanza, F. Crea, S. Cakal, E. Eroglu, B. Ozkan, S. Kulahcioglu, M. Bulut, A. Koyuncu, G. Acar, G. Alici, C. Dundar, F. Labombarda, E. Zangl, A. Pellissier, D. Bougle, P. Maragnes, P. Milliez, E. Saloux, S. Lagoudakou, E. Gialafos, A. Tsokanis, A. Nagy, T. Kovats, H. Vago, A. Toth, B. Sax, A. Kovacs, M. F. Elnoamany, H. Badran, I. Abdelfattah, T. Khalil, M. Salama, T. Butz, C. Taubenberger, F. Thangarajah, A. Meissner, M. Van Bracht, M. Prull, H. Yeni, G. Plehn, H. Trappe, R. Rydman, D. Bone, M. Alam, K. Caidahl, F. Larsen, Z. Gasior, Z. Tabor, P. Sengupta, D. Liu, M. Niemann, K. Hu, S. Herrmann, S. Stoerk, C. Morbach, S. Knop, W. Voelker, G. Ertl, F. Weidemann, P. Cawley, C. Hamilton-Craig, L. Mitsumori, J. Maki, C. Otto, M. Astrom Aneq, E. Nylander, T. Ebbers, J. Engvall, P. Arvanitis, F. Flachskampf, O. Duvernoy, F. De Torres Alba, S. Valbuena Lopez, G. Guzman Martinez, J. Gomez De Diego, J. Rey Blas, E. Armada Romero, E. Lopez De Sa, M. Moreno Yanguela, J. Lopez Sendon, N. Trikalinos, G. Siasos, A. Aggeli, A. Tomaszewski, A. Kutarski, M. Tomaszewski, O. Vriz, C. Driussi, M. Bettio, D. Pavan, F. Antonini Canterin, A. Doltra Magarolas, J. Fernandez-Armenta, E. Silva, N. Solanes, M. Rigol, A. Barcelo, L. Mont, A. Berruezo, J. Brugada, M. Sitges, F. L. Ciciarello, S. Mandolesi, F. Fedele, L. Agati, A. Marceca, S. Rhee, S. Shin, S. Kim, K. Yun, N. Yoo, N. Kim, S. Oh, J. Jeong, and N. Alabdulkarim
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education.field_of_study ,medicine.medical_specialty ,business.industry ,Multiple sclerosis ,Population ,Hemodynamics ,General Medicine ,Cerebro ,medicine.disease ,Internal medicine ,Cardiology ,Medicine ,Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine ,education ,business - Published
- 2011
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6. Poster Session 2: Thursday 8 December 2011, 14:00-18:00 * Location: Poster Area
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X. Luo, F. Fang, J. Sun, J. Xie, A. Lee, Q. Zhang, C. Yu, O. Breithardt, S. Schiessl, M. Schmid, M. Seltmann, L. Klinghammer, C. Zeissler, M. Kuechle, W. Daniel, M. Ege, U. Guray, Y. Guray, B. Demirkan, H. Kisacik, S.-E. Kim, J.-Y. Hong, J.-H. Lee, D.-G. Park, K.-R. Han, D.-J. Oh, O. Tufekcioglu, D. C. Cozma, C. Mornos, A. Ionac, L. Petrescu, C. Tutuianu, S. I. Dragulescu, L. Guimaraes, G. Tavares, A. Rodrigues, C. Nagamatsu, C. Fischer, M. Vieira, W. Oliveira, T. Wilberg, A. Cordovil, S. Morhy, D. Muraru, M. Peluso, L. Dal Bianco, M. Beraldo, E. Solda', M. Tuveri, U. Cucchini, A. Al Mamary, L. Badano, S. Iliceto, A. Pizzuti, B. Mabritto, C. Derosa, A. Tomasello, M. Rovere, I. Parrini, M. Conte, N. Lareva, A. Govorin, R. Cooper, J. Sharif, J. D. Somauroo, J. D. Hung, V. Porcelli, R. Skevington, A. Shahzad, S. Scott, P. Lindqvist, S. Soderberg, M. Gonzalez, E. Tossavainen, M. Henein, N. Nciri, H. Saad, S. Nawas, A. Ali, A. Youssufzay, A. Safi, S. Faruk, S. Yurdakul, V. Erdemir, Y. Tayyareci, O. Yildirimturk, K. Memic, V. Aytekin, M. Gurel, S. Aytekin, M. Przewlocka-Kosmala, M. Cielecka-Prynda, A. Mysiak, W. Kosmala, S. Pescariu, D. Cozma, A. Mornos, S. Dragulescu, N. Maurea, C. G. Tocchetti, C. Coppola, C. Quintavalle, D. Rea, A. Barbieri, G. Piscopo, C. Arra, G. Condorelli, R. Iaffaioli, H. Dalen, A. Thorstensen, H. Moelmen, H. Torp, A. Stoylen, D. Augustine, C. Basagiannis, J. Suttie, P. Cox, R. Aitzaz, A. Lewandowski, M. Lazdam, C. Holloway, H. Becher, P. Leeson, S. Radovanovic, A. Djokovic, B. Todic, M. Zdravkovic, M. Zaja-Simic, S. Banicevic, D. Lisulov-Popovic, M. Krotin, J. Grapsa, D. O'regan, D. Dawson, G. Durighel, L. Howard, J. Gibbs, P. Nihoyannopoulos, C. Tulunay Kaya, M. Kilickap, H. Kurklu, N. Ozbek, C. Koca, V. Kozluca, K. Esenboga, C. Erol, B. Kusmierczyk-Droszcz, E. Kowalik, J. Niewiadomska, P. Hoffman, M. Satendra, L. Sargento, S. Lopes, S. Longo, N. Lousada, R. Palma Reis, P. Chillo, A. Rieck, J. Lwakatare, J. Lutale, E. Gerdts, S. Bonapace, G. Molon, G. Targher, A. Rossi, L. Lanzoni, G. Canali, E. Campopiano, L. Zenari, L. Bertolini, E. Barbieri, K. Hristova, L. Vladiomirova-Kitova, T. Katova, F. Nikolov, P. Nikolov, S. Georgieva, I. Simova, V. Kostova, V. A. Kuznetsov, D. V. Krinochkin, P. A. Chandraratna, Y. A. Pak, E. H. Zakharova, A. V. Plusnin, M. V. Semukhin, E. A. Gorbatenko, E. I. Yaroslavskaya, G. Bedetti, L. Gargani, M. Scalese, C. Pizzi, R. Sicari, E. Picano, M. Reali, E. Canali, S. Cimino, M. Francone, M. Mancone, R. Scardala, F. Boccalini, Y. Hiramoto, A. Frustaci, L. Agati, K. Savino, A. Lilli, E. Bordoni, C. Riccini, G. Ambrosio, D. Silva, N. Cortez-Dias, P. Carrilho-Ferreira, C. Jorge, J. Silva-Marques, A. Magalhaes, L. Santos, S. Ribeiro, F. Pinto, A. Nunes Diogo, E. Kinova, N. Zlatareva, A. Goudev, C. Bonanad, M. Lopez-Lereu, J. Monmeneu, V. Bodi, J. Sanchis, J. Nunez, F. Chaustre, A. Llacer, D. Ermacora, D. Peluso, M. Di Lazzari, P. Meimoun, F. Elmkies, T. Benali, J. Boulanger, H. Zemir, J. Clerc, A. Luycx-Bore, M. S. Velasco Del Castillo, A. Cacicedo Fernandez De Bobadilla, J. Onaindia Gandarias, M. Telleria Arrieta, G. Zugazabeitia Irazabal, O. Quintana Raczka, I. Rodriguez Sanchez, A. Romero Pereiro, E. Laraudogoitia Zaldumbide, I. Lekuona Goya, B. Bonello, E. El Louali, V. Fouilloux, I. Kammache, C. Ovaert, B. Kreitmann, A. Fraisse, R. Migliore, M. Adaniya, M. Barranco, G. Miramont, H. Tamagusuku, A. Alassar, R. Sharma, A. Marciniak, O. Valencia, N. Abdulkareem, M. Jahangiri, N. Jander, R. Kienzle, C. Gohlke-Baerwolf, H. Gohlke, F.-J. Neumann, J. Minners, S. Valbuena, F. De Torres, T. Lopez, J. J. Gomez, G. Guzman, F. Dominguez, E. Refoyo, M. Moreno, J. L. Lopez-Sendon, R. Ancona, S. Comenale Pinto, P. Caso, G. Di Salvo, S. Severino, M. Cavallaro, R. Calabro, R. Enache, R. Piazza, A. Roman-Pognuz, B. Popescu, A. Calin, C. Beladan, F. Purcarea, G. Nicolosi, C. Ginghina, O. Savu, M. Rosca, R. Jurcut, M. Serban, L. Dorobantu, E. Donal, S. Mascle, C. Thebault, D. Veillard, H. Hamonic, A. Leguerrier, H. Corbineau, B. A. Popa, M. Diena, A. Bogdan, D. Benea, G. Lanzillo, V. Casati, E. Novelli, A. Popa, G. Cerin, F. Gual Capllonch, A. Teis, J. Lopez Ayerbe, E. Ferrer, N. Vallejo, E. Gomez Denia, A. Bayes Genis, S. Spethmann, S. Schattke, G. Baldenhofer, V. Stangl, M. Laule, G. Baumann, K. Stangl, F. Knebel, C. Labata, C. Garcia Alonso, F. Gual, R. Nunez Aragon, C. Sousa, A. I. Vasile, M. Dorobantu, C. Iorgulescu, S. Bogdan, D. Constantinescu, C. Caldararu, O. Tautu, R. Vatasescu, H. Badran, M. F. Elnoamany, M. Ayad, A. Elshereef, A. Farhan, Y. Nassar, M. Yacoub, J. Costabel, G. Avegliano, P. Elissamburu, J. Thierer, F. Castro, M. Huguet, A. Frangi, R. Ronderos, C. Prinz, F. Van Buuren, L. Faber, T. Bitter, N. Bogunovic, W. Burchert, D. Horstkotte, J. D. Kasprzak, A. Smialowski, T. Rudzinski, P. Lipiec, M. Krzeminska-Pakula, K. Wierzbowska-Drabik, E. Trzos, M. Kurpesa, H. Motoki, M. Hana, T. Marwick, K. Allan, M. Vazquez-Alvarez, C. Medrano Lopez, S. Granja Da Silva, C. Marcos, A. Rodriguez-Ogando, M. Alvarez, M. Camino, M. Centeno, E. Maroto, G. Feltes Guzman, V. Serra Tomas, O. Acevedo, A. Calli, M. Barba, G. Pintos, V. Valverde, J. Zamorano Gomez, M. Marchel, J. Kochanowski, R. Piatkowski, A. Madej, K. Filipiak, I. Hausmanowa-Petrusewicz, G. Opolski, E. Malev, E. Zemtsovsky, S. Reeva, E. Timofeev, A. Pshepiy, S. Mihaila, R. Rimbas, R. Mincu, R. Dulgheru, R. Mihaila, C. Badiu, M. Cinteza, D. Vinereanu, E. Lira, D. Lebihan, C. Monaco, M. Ruiz Ortiz, D. Mesa, M. Delgado, E. Romo, M. Pena, M. Puentes, M. Santisteban, A. Lopez Granados, J. Arizon Del Prado, J. Suarez De Lezo, W.-C. Tsai, J.-Y. Shih, T.-S. Huang, Y.-W. Liu, Y.-Y. Huang, L.-M. Tsai, E. Cho, K. Choi, B. Kwon, D. Kim, S. Jang, C. Park, H. Jung, H. Jeon, H. Youn, J. Kim, A. E. Rieck, D. Cramariuc, M. Lonnebakken, B. Lund, P. Moceri, D. Doyen, P. Cerboni, E. Ferrari, W. Li, S. Goncalves, G. Vinhais De Sousa, A. G. Almeida, C. Hernandez Garcia, A. De La Rosa Hernandez, E. Arroyo Ucar, P. Jorge Perez, A. Barragan Acea, J. Lacalzada Almeida, J. Jimenez Rivera, A. Duque Garcia, I. Laynez Cerdena, O. Arhipov, A. N. Sumin, L. Campens, M. Renard, B. Trachet, P. Segers, A. De Paepe, J. De Backer, J. A. Purvis, D. Sharma, S. M. Hughes, D. Marek, D. Vindis, E. Kocianova, M. Taborsky, H. Yoon, K. Kim, Y. Ahn, M. Chung, J. Cho, J. Kang, W. Rha, O. Ozcan, D. Sezgin Ozcan, B. Candemir, M. Aras, I. Dincer, R. Atak, L. Gianturco, M. Turiel, F. Atzeni, L. Tomasoni, E. Bruschi, O. Epis, P. Sarzi-Puttini, C. Aggeli, E. Poulidakis, I. Felekos, S. Sideris, P. Dilaveris, K. Gatzoulis, C. Stefanadis, N. Roszczyk, M. Sobczak, J. Peruga, R. Krecki, J. Kasprzak, K. Ishii, T. Suyama, K. Kataoka, A. Furukawa, T. Nagai, M. Maenaka, Y. Seino, F. Musca, B. De Chiara, A. Moreo, S. Cataldo, M. Parolini, O. Parodi, T. Bombardini, F. Faita, S.-J. Park, J.-H. Kil, S.-J. Kim, S.-Y. Jang, S.-A. Chang, J.-O. Choi, S.-C. Lee, S. Park, P. Park, J. Oh, M. Cikes, V. Velagic, B. Biocina, H. Gasparovic, Z. Djuric, B. Bijnens, D. Milicic, A. Huqi, B. Klas, A. He, I. Paterson, M. Irween, J. Ezekovitz, J. Choy, Y. Chen, L. Cheng, R. Yao, H. Yao, H. Chen, C. Pan, X. Shu, B. Sobkowicz, M. Kaminska, W. Musial, R. Buechel, G. Sommer, G. Leibundgut, A. Rohner, J. Bremerich, B. Kaufmann, A. Kessel-Schaefer, M. Handke, A. Kiotsekoglou, S. Saha, R. Toole, S. Sharma, A. Gopal, S. Adhya, W. Tsang, C. Kenny, S. Kapetanakis, R. Lang, M. Monaghan, B. Smith, T. Coulter, A. Rendon, W.-S. Cheung, W. Gorissen, J. A. Ejlersen, O. May, F. J. Van Slochteren, T. Van Der Spoel, H. Hanssen, P. Doevendans, S. Chamuleau, C. De Korte, A. Tarr, S. Stoebe, T. Trache, J.-G. Kluge, A. Varga, A. Hagendorff, A. Nagy, A. Kovacs, A. Apor, B. Sax, D. Becker, B. Merkely, R. Lindquist, A. Miller, C. Reece, B. W. Eidem, W.-G. Choi, S. Kim, S. Oh, Y. Kim, R. Iacobelli, M. Chinali, M. D' Asaro, A. Toscano, A. Del Pasqua, C. Esposito, G. Seghetti, F. Parisi, G. Pongiglione, G. Rinelli, O. Omaygenc, R. Bakal, C. Dogan, K. Teber, S. Akpinar, G. Sahin, N. Ozdemir, A. Penhall, M. Joseph, F. Chong, C. De Pasquale, J. Selvanayagam, D. Leong, E. G. Nyktari, A. P. Patrianakos, C. Goudis, G. Solidakis, F. Parthenakis, P. Vardas, E. Nestaas, D. Fugelseth, A. Vitarelli, L. Capotosto, M. Bernardi, Y. Conde, F. Caranci, G. Placanica, O. Dettori, M. Vitarelli, S. De Chiara, V. De Cicco, M. Ferro', R. Calabro', S. Apostolakis, G. Chalikias, D. Tziakas, D. Stakos, A. Thomaidi, S. Konstantinides, G. Iorio, R. Rucos, G. Continanza, M. D Ascanio, L. Alessandroni, M. Saponara, M. Berry, J. Nahum, O. Zaghden, J. Monin, J. Couetil, O. Lairez, L. Macron, J. Dubois Rande, P. Gueret, P. Lim, M. Cameli, E. Giacomin, M. Lisi, S. Benincasa, F. Righini, D. Menci, M. Focardi, S. Mondillo, E. Philip, G. Gorincour, H. Bellsham-Revell, A. J. Bell, O. I. Miller, P. Beerbaum, R. Razavi, G. Greil, J. M. Simpson, S. Ann, T. Kim, J. Lee, J. Chin, P. Cabeza Lainez, V. Escolar Camas, L. Gheorghe, P. Fernandez Garcia, R. Vazquez Garcia, V. Caiulo, S. Caiulo, A. Fisicaro, F. Moramarco, G. Latini, A. Seale, J. Carvalho, H. Gardiner, M. Roughton, J. Simpson, A. Tometzki, O. Uzun, S. Webber, P. Daubeney, A. Dawood, G. Dwivedi, G. Mahadevan, D. Jiminez, R. Steeds, M. Frenneaux, C. H. Attenhofer Jost, B. Knechtle, A. Bernheim, M. Pfyffer, A. Linka, A. Faeh-Gunz, B. Seifert, G. De Pasquale, M. Zuber, A. Tomaszewski, A. Kutarski, and M. Tomaszewski
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Computer science ,Plane (geometry) ,business.industry ,Echo (computing) ,Left atrium ,General Medicine ,Biplane ,medicine.anatomical_structure ,Software ,Left atrial ,medicine ,Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine ,business ,Nuclear medicine - Published
- 2011
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7. Poster Session 5: Saturday 10 December 2011, 08:30-12:30 * Location: Poster Area
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L. Gong, Z. Ye, Z. Zeng, M. Xia, Y. Zhong, Y. Yao, E. Lee, A. Ionescu, G. Dwivedi, G. Mahadevan, D. Jiminez, M. Frenneaux, R. Steeds, C. Moore, Z. Samad, K. Jackson, J. Castellucci, J. Kisslo, O. Von Ramm, F. D'ascenzi, V. Zaca', M. Cameli, M. Lisi, B. Natali, A. Malandrino, S. Mondillo, P. Barbier, U. Guerrini, M. Franzosi, L. Castiglioni, E. Nobili, F. Colazzo, T. Li Causi, L. Sironi, E. Tremoli, H. Clausen, S. Macdonald, C. Basaggianis, J. Newton, E. Bennati, R. Reccia, E. Bigio, M. Maccherini, M. Chiavarelli, M. Henein, M. Floria, J. Jamart, C. Arsenescu Georgescu, F. Mantovani, A. Barbieri, F. Bursi, C. Valenti, M. Quaglia, M. Modena, S. Kutty, P. Gribben, A. Padiyath, A. Polak, C. Scott, M. Waiss, D. Danford, O. Bech-Hanssen, N. Selimovic, B. Rundqvist, L. Schmiedel, C. Hohmann, S. Katzke, K. Haacke, T. Rauwolf, R. Strasser, L. R. Tumasyan, K. Adamyan, W. Kosmala, R. Derzhko, M. Przewlocka-Kosmala, A. Mysiak, B. Stachowska, D. Jedrzejuk, G. Bednarek-Tupikowska, L. Chrzanowski, J. Kasprzak, C. Wojciechowska, K. Wita, B. Busz-Papiez, Z. Gasior, K. Mizia-Stec, T. Kukulski, P. Gosciniak, W. Sinkiewicz, H. Moelmen, A. Stoylen, A. Thorstensen, H. Torp, H. Dalen, A. Groves, G. Nicholson, L. Lopez, C.-W. Goh, H. Ahn, Y. Byun, J. Kim, J. Park, J. Lee, B. Kim, K. Rhee, K. Kim, H. Yoon, Y. Hong, H. Park, Y. Ahn, M. Jeong, J. Cho, J. Kang, J. Grapsa, D. Dawson, K. Karfopoulos, G. Jakaj, P. Punjabi, P. Nihoyannopoulos, C. Ruisanchez Villar, P. Lerena Saenz, F. Gonzalez Vilchez, C. Gonzalez Fernandez, F. Zurbano Goni, J. Cifrian Martinez, R. Mons Lera, J. Ruano Calvo, R. Martin Duran, J. Vazquez De Prada Tiffe, R. Pietrzak, B. Werner, D. Voillot, O. Huttin, P. Zinzius, J. Schwartz, J. Sellal, S. Lemoine, C. Christophe, B. Popovic, Y. Juilliere, C. Selton-Suty, K. Ishii, A. Furukawa, T. Nagai, K. Kataoka, Y. Seino, K. Shimada, J. Yoshikawa, A. Tekkesin, O. Yildirimturk, Y. Tayyareci, S. Yurdakul, S. Aytekin, J. Jaroch, K. Loboz-Grudzien, Z. Bociaga, A. Kowalska, E. Kruszynska, M. Wilczynska, K. Dudek, R. Kakihara, C. Naruse, H. Hironaka, T. Tsuzuku, U. Cucchini, D. Muraru, L. Badano, E. Solda', M. Tuveri, O. Al Nono, C. Sarais, S. Iliceto, L. Santos, N. Cortez-Dias, S. Ribeiro, S. Goncalves, C. Jorge, P. Carrilho-Ferreira, D. Silva, J. Silva-Marques, M. Lopes, A. Diogo, K. Hristova, D. Vassilev, P. Pavlov, T. Katova, I. Simova, V. Kostova, R. Esposito, A. Santoro, V. Schiano Lomoriello, R. Raia, D. De Palma, E. Dores, G. De Simone, M. Galderisi, B. Zaborska, E. Makowska, E. Pilichowska, P. Maciejewski, B. Bednarz, W. Wasek, S. Stec, A. Budaj, L. Spinelli, C. Morisco, E. Assante Di Panzillo, S. Crispo, S. Di Marino, B. Trimarco, F. Farina, P. Innelli, A. Rapacciuolo, B. Polgar, F. Banyai, L. Rokusz, I. Tomcsanyi, M. Vaszily, E. Nieszner, T. Borsanyi, G. Kerecsen, I. Preda, R. G. Kiss, S. Bull, J. Suttie, D. Augustine, J. Francis, T. Karamitsos, H. Becher, B. Prendergast, S. Neubauer, S. Myerson, F. Lodge, C. Broyd, P. Milton, G. Mikhail, J. Mayet, J. Davies, D. Francis, M.-A. Clavel, P.-V. Ennezat, S. Marechaux, J. Dumesnil, A. Bellouin, S. Bergeron, P. Meimoun, T. Le Tourneau, A. Pasquet, P. Pibarot, S. Herrmann, S. Stoerk, M. Niemann, K. Hu, W. Voelker, G. Ertl, F. Weidemann, V. Aytekin, P. Kogoj, J. Ambrozic, M. Bunc, G. Di Salvo, A. Rea, B. Castaldi, S. Gala, A. D'aiello, A. Mormile, F. Pisacane, G. Pacileo, M. Russo, R. Calabro, L. Nguyen, S.-E. Ricksten, A. Jeppsson, H. Schersten, K. Boerlage-Van Dijk, Z. Yong, B. Bouma, K. Koch, M. Vis, J. Piek, J. Baan, S. Scandura, G. Ussia, A. Caggegi, V. Cammalleri, K. Sarkar, S. Mangiafico, M. Chiaranda', S. Imme', A. Pistritto, C. Tamburino, L. Ring, S. Nair, F. Wells, L. Shapiro, R. Rusk, B. Rana, G. Madrid Marcano, J. Solis Martin, A. Gonzalez Mansilla, L. Bravo, C. Menarguez Palanca, P. Munoz, E. Bouza, R. Yotti, J. Bermejo Thomas, F. Fernandez Aviles, T. Tamayo, M. Denes, O. Balint, A. Csepregi, A. Csillik, T. Erdei, A. Temesvari, J. Fernandez-Pastor, A. Linde-Estrella, F. Cabrera-Bueno, J. Pena-Hernandez, A. Barrera-Cordero, F. Alzueta-Rodriguez, E. De Teresa-Galvan, M. Merlo, M. Pinamonti, G. Finocchiaro, S. Pyxaras, G. Barbati, A. Buiatti, A. Dilenarda, G. Sinagra, R. Kuperstein, D. Freimark, S. Hirsch, M. Feinberg, M. Arad, C. Mitroi, I. Garcia Lunar, V. Monivas Palomero, S. Mingo Santos, P. Beltran Correas, E. Gonzalez Lopez, P. Garcia Pavia, J. Gonzalez Mirelis, M. Cavero Gibanel, L. Alonso Pulpon, B. Pinamonti, A. Zaidi, S. Ghani, N. Sheikh, S. Gati, R. Howes, R. Sharma, S. Sharma, M. Calcagnino, C. O'mahony, C. Coats, M. Cardona, A. Garcia, E. Murphy, R. Lachmann, A. Mehta, D. Hughes, P. Elliott, G. Di Bella, A. Madaffari, R. Donato, A. Mazzeo, M. Casale, C. Zito, G. Vita, S. Carerj, D. Marek, J. Indrakova, Z. Rusinakova, T. Skala, E. Kocianova, M. Taborsky, F. Musca, B. De Chiara, O. Belli, S. Cataldo, C. Brunati, G. Colussi, G. Quattrocchi, G. Santambrogio, F. Spano, A. Moreo, L. Rustad, K. Nytroen, L. Gullestad, B. Amundsen, S. Aakhus, N. Maroz-Vadalazhskaya, V. Shumavetc, S. Kurganovich, Y. Seljun, A. Ostrovskiy, Y. Ostrovskiy, P. Segers, A. Orda, B. Karolko, M. M. P. Driessen, J. B. Eising, C. Uiterwaal, C. K. Van Der Ent, F. J. Meijboom, Q. Shang, L. Tam, J. Sun, J. Sanderson, Q. Zhang, E. Li, C. Yu, E. Arroyo Ucar, A. De La Rosa Hernandez, C. Hernandez Garcia, P. Jorge Perez, J. Lacalzada Almeida, J. Jimenez Rivera, A. Duque Garcia, A. Barragan Acea, I. Laynez Cerdena, M. Kaldararova, I. Simkova, J. Pacak, P. Tittel, J. Masura, M. Tadic, B. Ivanovic, M. Zlatanovic, N. Damjanov, S. Maggiolini, G. Gentile, A. Bozzano, S. Suraci, E. Meles, C. Carbone, A. Tempesta, C. Malafronte, L. Piatti, F. Achilli, P. Luijendijk, A. Stevens, H. De Bruin-Bon, J. Vriend, R. Van Den Brink, H. Vliegen, B. Mulder, V. Chow, A. Ng, T. Chung, L. Kritharides, M. Iancu, M. Serban, I. Craciunescu, A. Hodo, I. Ghiorghiu, B. Popescu, C. Ginghina, G. Styczynski, C. A. Szmigielski, A. Kaczynska, J. Leszczynski, G. Rosinski, A. Kuch-Wocial, M. Slavich, M. Ancona, A. Fisicaro, M. Oppizzi, E. Marone, L. Bertoglio, G. Melissano, A. Margonato, R. Chiesa, E. Agricola, M. Mohammed, M. Cusma-Piccione, S. Piluso, S. Arcidiaco, R. Nava, R. Giuffre, L. Ciraci, M. Ferro, V. Uusitalo, M. Luotolahti, M. Pietila, M. Wendelin-Saarenhovi, J. Hartiala, M. Saraste, J. Knuuti, A. Saraste, J. Kochanowski, P. Scislo, R. Piatkowski, M. Grabowski, M. Marchel, M. Roik, D. Kosior, G. Opolski, P. E. Bartko, S. Graf, A. Khorsand, R. Rosenhek, I. Burwash, R. Beanlands, H. Baumgartner, G. Mundigler, S. Kudrnova, A. Apor, H. Huttl, F. Mori, G. Santoro, A. Oddo, G. Rosso, F. Meucci, F. Pieri, G. Squillantini, G. Gensini, M. Postula, D.-G. Park, J.-Y. Hong, S.-E. Kim, J.-H. Lee, K.-R. Han, D.-J. Oh, L. Dal Bianco, M. Beraldo, D. Peluso, A. Al Mamary, C. Aggeli, I. Felekos, E. Poulidakis, P. Pietri, G. Roussakis, G. Siasos, C. Stefanadis, H. Hoshiba, C. Miyasaka, H. Sato, A. Yamanaka, A. Lilli, M. Baratto, M. Magnacca, A. Comella, R. Poddighe, E. Talini, M. Canale, M. Chioccioli, J. Del Meglio, G. Casolo, V. A. Kuznetsov, N. N. Melnikov, D. V. Krinochkin, A. Calin, R. Enache, C. Beladan, M. Rosca, L. Lupascu, F. Purcarea, C. Calin, M. Gurzun, R. Dulgheru, A. Ciobanu, S. Magda, S. Mihaila, R. Rimbas, A. Margulescu, M. Cinteza, D. Vinereanu, A. N. Sumin, O. Arhipov, J. Yoon, J. Moon, S. Rim, E. Nyktari, A. Patrianakos, G. Solidakis, E. Psathakis, F. Parthenakis, P. Vardas, M. Kordybach, M. Kowalski, E. Kowalik, P. Hoffman, K. V. Nagy, V. Kutyifa, E. Edes, B. Merkely, A. Gerlach, C. Rost, M. Schmid, M. Rost, F. Flachskampf, W. Daniel, O. Breithardt, E. Altekin, S. Karakas, A. Yanikoglu, A. Er, A. Baktir, I. Demir, N. Deger, L. Klitsie, M. Hazekamp, A. Roest, A. Van Der Hulst, B. Gesink- Van Der Veer, I. Kuipers, N. Blom, A. Ten Harkel, K. Farsalinos, D. Tsiapras, S. Kyrzopoulos, E. Avramidou, D. Vasilopoulou, V. Voudris, T. Florianczyk, M. Kalinowski, M. Szulik, W. Streb, B. Rybus-Kalinowska, A. Sliwinska, J. Stabryla, M. Kukla, J. Nowak, Z. Kalarus, M. Florescu, D. Mihalcea, L. Magda, B. Suran, O. Enescu, R. Mincu, G. Salerno, G. Scognamiglio, A. D'andrea, G. Dinardo, R. Gravino, B. Sarubbi, G. Disalvo, J.-N. Liao, S. Sung, C. Chen, S. Park, S. Shin, M. Kim, S. Shim, F. Helvacioglu, O. Ulusoy, C. Duran, R. Kirschner, T. Simor, G. Ambrosio, T. Tran, S. Raman, R. C. Vidal Perez, F. Carreras, R. Leta, S. Pujadas, A. Barros, A. Hidalgo, X. Alomar, G. Pons-Llado, M. Olofsson, K. Boman, A. Ledakowicz-Polak, L. Polak, M. Zielinska, A. Fontana, V. Schirone, A. Mauro, A. Zambon, C. Giannattasio, G. Trocino, M. Dekleva, H. Dungen, S. Inkrot, G. Gelbrich, J. Suzic Lazic, M. Kleut, N. Markovic Nikolic, F. Waagstein, S. Khoor, N. Balogh, I. Simon, K. Fugedi, I. Kovacs, M. Khoor, G. Florian, A. Kocsis, T. Szuszai, J. O'driscoll, A. Saha, R. Smith, S. Gupta, Z. Lenkey, B. Gaszner, M. Illyes, Z. Sarszegi, I. G. Horvath, B. Magyari, F. Molnar, A. Cziraki, M. F. Elnoamany, H. Badran, H. Ebraheem, A. Reda, and N. Elsheekh
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Speckle pattern ,Acoustics ,Radiology, Nuclear Medicine and imaging ,General Medicine ,Deformation (meteorology) ,Cardiology and Cardiovascular Medicine ,Tracking (particle physics) ,Geology - Published
- 2011
- Full Text
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8. Poster session II * Thursday 9 December 2010, 14:00-18:00
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P. A. Pabari, A. Kyriacou, M. Moraldo, B. Unsworth, R. Baruah, N. Sutaria, A. Hughes, J. Mayet, D. P. Francis, T. Uejima, K. Loboz, F. Antonini-Canterin, C. Polombo, S. Carerj, D. Vinereanu, A. Evangelista, G. Leftheriotis, A. G. Fraser, A. Kiotsekoglou, M. Govindan, S. C. Govind, S. K. Saha, A. J. Camm, P. M. Azcarate, S. Castano, M. Rodriguez-Manero, M. Arraiza, B. Levy, J. Barba, G. Rabago, G. Bastarrika, A. Nemes, R. Takacs, T. Varkonyi, H. Gavaller, I. Baczko, T. Forster, T. Wittmann, J. G. Papp, C. Lengyel, A. Varro, L. R. Tumasyan, K. G. Adamyan, O. Savu, T. Mieghem, P. Dekoninck, L. Gucciardo, R. Jurcut, S. Giusca, B. A. Popescu, C. Ginghina, J. Deprest, J. U. Voigt, M. Versiero, M. Galderisi, R. Esposito, A. Rapacciuolo, G. Esposito, R. Raia, T. Morgillo, F. Piscione, G. De Simone, M. A. Oraby, F. A. Maklady, E. M. Mohamed, A. Z. Eraki, D. Zaliaduonyte-Peksiene, E. Tamuleviciute, J. Janenaite, J. Marcinkeviciene, V. Mizariene, S. Bucyte, J. Vaskelyte, D. Trifunovic, I. Nedeljkovic, D. Popovic, M. Ostojic, B. Vujisic-Tesic, M. Petrovic, S. Stankovic, D. Sobic-Saranovic, M. Banovic, A. Dikic-Djordjevic, K. Savino, A. Lilli, E. Grikstaite, V. Giglio, E. Bordoni, G. Maragoni, C. Cavallini, G. Ambrosio, B. Jakovljevic, B. Beleslin, M. Nedeljkovic, O. Petrovic, S. Moral, J. Rodriguez-Palomares, M. Descalzo, G. Marti, V. Pineda, P. Mahia, L. Gutierrez, T. Gonzalez-Alujas, D. Garcia-Dorado, F. Schnell, E. Donal, C. Thebault, A. Bernard, H. Corbineau, H. Le Breton, J. Kochanowski, P. Scislo, R. Piatkowski, M. Roik, M. Marchel, D. Kosior, G. Opolski, A. M. Lesniak-Sobelga, E. Wicher-Muniak, M. Kostkiewicz, M. Olszowska, E. Suchon, P. Klimeczek, P. Banys, M. Pasowicz, W. Tracz, P. Podolec, A. Laynez, D. E. Hoefsten, B. B. Loegstrup, B. Norager, J. E. Moller, A. Flyvbjerg, K. Egstrup, W. Streb, M. Szulik, J. Nowak, E. Markowicz-Pawlus, A. Duszanska, A. Sedkowska, Z. Kalarus, T. Kukulski, L. Spinelli, C. Morisco, E. Assante Di Panzillo, F. Buono, S. Crispo, B. Trimarco, A. A. Hawary, G. M. Nasr, M. M. Fawzy, L. Faber, W. Scholtz, J. Boergermann, M. Wiemer, G. Kleikamp, N. Bogunovic, Z. Dimitriadis, J. Gummert, D. Hering, D. Horstkotte, F. Luca', S. Gelsomino, R. Lorusso, S. Caciolli, R. Carella, G. Bille', G. De Cicco, V. Pazzagli, G. F. Gensini, A. Borowiec, R. Dabrowski, J. Janas, A. Kraska, B. Firek, I. Kowalik, H. Szwed, K. A. Marcus, C. L. De Korte, T. Feuth, J. M. Thijssen, L. Kapusta, J. Dahl, L. Videbaek, M. K. Poulsen, P. A. Pellikka, K. Veien, L. I. Andersen, T. Haghfelt, M. Haberka, K. Mizia - Stec, T. Adamczyk, M. Mizia, A. Chmiel, P. Pysz, M. Sosnowski, Z. Gasior, M. Trusz - Gluza, M. Tendera, T. Niklewski, K. Wilczek, P. Chodor, T. Podolecki, A. Frycz-Kurek, M. Zembala, S. Yurdakul, O. Yildirimturk, Y. Tayyareci, K. Memic, I. C. C. Demiroglu, S. Aytekin, C. J. Garcia Alonso, E. Ferrer Sistach, L. Delgado, J. Lopez Ayerbe, N. Vallejo Camazon, F. Gual Capllonch, M. Espriu Simon, X. Ruyra, A. Caballero Parrilla, A. Bayes Genis, L. Lecuyer, A. Berrebi, E. Florens, M. Noghin, C. Huerre, P. Achouh, R. Zegdi, J. N. Fabiani, B. De Chiara, A. Moreo, F. Musca, F. De Marco, E. Lobiati, O. Belli, F. Mauri, S. Klugmann, A. Caballero, N. Vallejo, A. Gonzalez Guardia, R. Nunez Aragon, C. Bosch, E. Ferrer, M. L. Pedro Botet, F. Gual, M. Cusma-Piccione, C. Zito, G. Oreto, R. Giuffre, M. C. Todaro, C. M. Barbaro, S. Lanteri, C. Longordo, J. Salvia, A. Bensaid, R. Gallet, E. Fougeres, P. Lim, J. Nahum, J. F. Deux, P. Gueret, E. Teiger, J. L. Dubois-Rande, J. L. Monin, F. Behramoglu, Z. Colakoglu, V. Aytekin, C. Demiroglu, L. Gargani, E. Poggianti, R. Bucalo, M. Rizzo, F. Agrusta, P. Landi, R. Sicari, E. Picano, A. Sutandar, B. B. Siswanto, I. Irmalita, G. Harimurti, S. Y. Hayashi, M. M. Nascimento, B. Lindholm, B. Lind, A. Seeberger, M. A. Pachaly, M. C. Riella, A. Bjallmark, L. A. Brodin, L. Poanta, M. Porojan, D. L. Dumitrascu, I. Ikonomidis, S. Tzortzis, J. Lekakis, D. T. Kremastinos, I. Paraskevaidis, I. Andreadou, M. Nikolaou, P. Katsibri, M. Anastasiou-Nana, A. M. Maceira Gonzalez, C. Ripoll, J. Cosin-Sales, B. Igual, J. Salazar, V. Belloch, J. Cosin-Aguilar, D. J. Pennell, M. Masaki, J. N. Pulido, T. Yuasa, S. Gillespie, B. Afessa, D. R. Brown, S. V. Mankad, J. K. Oh, A. L. Gurghean, A. M. Mihailescu, I. Tudor, C. Homentcovschi, M. Muraru, I. V. Bruckner, C. E. Correia, B. Rodrigues, D. Moreira, L. F. Santos, P. Gama, O. Dionisio, C. Cabral, O. Santos, T. Bombardini, S. Gherardi, G. Arpesella, S. Valente, I. Calamai, E. Pasanisi, S. Sansoni, P. Szymanski, P. Dobrowolski, M. Lipczynska, A. Klisiewicz, P. Hoffman, D. Stepowski, B. Kurtz, G. Grezis-Soulie, A. Savoure, F. Anselme, F. Bauer, J. Castillo, N. Herszkowicz, C. Ferreira, A. Goscinska, K. Mizia-Stec, W. Poborski, O. Azevedo, I. Quelhas, J. Guardado, M. Fernandes, C. S. Miranda, P. Gaspar, A. Lourenco, R. Medeiros, J. Almeida, S. L Bennani, V. Algalarrondo, S. Dinanian, J. Guiader, C. Juin, D. Adams, M. S. Slama, J. J. Onaindia, O. Quintana, S. Velasco, E. Astigarraga, A. Cacicedo, J. Gonzalez, I. Rodriguez, M. Sadaba, M. Eneriz, E. Laraudogoitia Zaldumbide, I. Nunez-Gil, M. Luaces, J. Zamorano, J. C. Garcia Rubira, D. Vivas, B. Ibanez, P. Marcos Alberca, C. Fernandez Golfin, J. Alonso, C. Macaya, J. Silva Marques, A. G. Almeida, V. Carvalho, C. Jorge, D. Silva, M. Gato Varela, S. Martins, D. Brito, M. G. Lopes, E. Tripodi, B. Miserrafiti, V. Montemurro, R. Scali, P. Tripodi, A. Winkler, A. Madej, I. Hausmanowa-Petrusewicz, M. Fijalkowski, A. Koprowski, M. Jaguszewski, R. Galaska, M. Taszner, A. Rynkiewicz, R. Citro, F. Rigo, G. Provenza, Q. Ciampi, M. M. Patella, A. D'andrea, O. Vriz, C. Astarita, E. Bossone, F. Heggemann, T. H. Walter, T. H. Kaelsch, T. Sueselbeck, T. H. Papavassiliu, M. Borggrefe, D. Haghi, T. Monk-Hansen, C. Have Dall, S. Bisgaard Christensen, M. Snoer, F. Gustafsson, H. Rasmusen, E. Prescott, G. Finocchiaro, B. Pinamonti, M. Merlo, G. Barbati, A. Di Lenarda, R. Bussani, G. Sinagra, T. Butz, C. N. Lang, A. Meissner, G. Plehn, H. Yeni, C. Langer, H. J. Trappe, X. Gu, X. Y. Gu, Y. H. He, Z. A. Li, J. C. Han, J. Chen, P. Gaudron, M. Niemann, S. Herrmann, K. Hu, B. Bijnens, H. Hillenbrand, M. Beer, G. Ertl, F. Weidemann, A. Mazzone, M. Mariani, I. Foffa, A. Vianello, S. Del Ry, S. Bevilacqua, M. G. Andreassi, M. Glauber, S. Berti, M. Grabowski, M. Postula, A. Dragulescu, G. Van Arsdell, O. Al-Radi, C. Caldarone, L. Mertens, K. J. Lee, R. P. Casula, H. Yadav, A. Cherian, A. D. Hughes, A. Vitarelli, S. D'orazio, B. L. Nguyen, G. Iorio, D. Battaglia, F. Caranci, V. Padella, L. Capotosto, L. Alessandroni, F. Barilla, C. Cardin, S. Hascoet, M. Saudron, G. Caudron, B. Arnaudis, P. Acar, M. M. Sun, X. H. Shu, C. Z. Pan, X. Y. Fang, D. H. Kong, F. Fang, Q. Zhang, Y. S. Chan, J. M. Xie, W. K. Yip, Y. Y. Lam, J. E. Sanderson, C. M. Yu, M. Rosca, K. O' Connor, G. Romano, J. Magne, A. Calin, D. Muraru, L. Pierard, P. Lancellotti, A. Roushdy, I. Elfiky, G. El Shahid, A. Elfiky, M. El Sayed, K. Wierzbowska-Drabik, L. Chrzanowski, A. Kapusta, E. Plonska-Goscinak, M. Krzeminska-Pakula, M. Kurpesa, T. Rechcinski, E. Trzos, J. D. Kasprzak, M. K. Ersboll, N. Valeur, U. M. Mogensen, M. Andersen, C. Hassager, P. Sogaard, L. V. Kober, M. Kloeckner, D. Hayat, C. Dussault, N. Lellouche, N. Elbaz, A. Demopoulos, G. Hatzigeorgiou, E. Leontiades, A. Motsi, G. Karatasakis, G. Athanassopoulos, P. Zycinski, J. Kasprzak, M. C. Vazquez Alvarez, C. Medrano Lopez, M. Camino Lopez, S. Granja, J. L. Zunzunegui Martinez, E. Maroto Alvaro, W.-C. Tsai, J.-Y. Chen, Y.-W. Liu, C.-C. Lin, L.-M. Tsai, D. C. Gomes, S. Robalo Martins, M. R. Gois, S. Ribeiro, A. Nunes Diogo, P. Sengupta, G. Di Bella, G. Caracciolo, S. Lentini, E. Kinova, N. Zlatareva, A. Goudev, N. Papagiannis, M. Mpouki, A. Papagianni, M. Vorria, G. Mpenetos, D. Lytra, E. Papadopoulou, P. Sgourakis, J. Malakos, J. Kyriazis, V. Kodali, R. Toole, A. S. Gopal, J. Celutkiene, A. Rudys, V. Grabauskiene, S. Glaveckaite, E. Sadauskiene, Z. Lileikiene, N. Bickauskaite, E. Ciburiene, V. Skorniakov, A. Laucevicius, C. H. Attenhofer Jost, M. Pfyffer, R. Lindquist, J. L. F. Santos, O. R. C. Coelho, C. M. Mady, M. H. P. Picard, V. M. C. Salemi, L. Funk, M. W. Prull, J.-Y. Shih, Y.-Y. Huang, K. O'connor, M. Moonen, L. A. Pierard, D. C. Cozma, C. Mornos, A. Ionac, L. Petrescu, D. Dragulescu, R. Dan, I. Popescu, S. I. Dragulescu, T. G. Von Lueder, A. Hodt, G. F. Gjerdalen, T. E. Andersen, E. E. Solberg, K. Steine, T. Van Mieghem, M. Rostek, W. Pikto-Pietkiewicz, M. Dluzniewski, A. Antoniewicz, S. Poletajew, A. Borowka, T. Pasierski, S. K. Malyutina, M. Ryabikov, J. Ragino, A. Ryabikov, S. Sitia, L. Tomasoni, F. Atzeni, L. Gianturco, P. Sarzi-Puttini, V. De Gennaro Colonna, M. Turiel, F. R. Gutierrez, G. Lefhtheriotis, R. T. Hurst, M. R. Nelson, F. Mookadam, V. Thota, U. Emani, M. Al Harthi, J. Stepanek, S. Cha, S. J. Lester, E. M. M. Ho, L. Hemeryck, M. Hall, K. Scott, K. Bennett, A. Mahmud, C. Daly, G. King, R. T. Murphy, A. S. Brown, A. J. Teske, J. D'Hooge, P. Claus, F. Rademakers, L. Santos, N. Cortez-Dias, S. Goncalves, M. Almeida Ribeiro, A. Bordalo E Sa, C. Magnino, P. Marcos-Alberca, A. Milan, C. Almeria, V. Caniadas, J. L. Rodrigo, L. Perez De Isla, J. L. Zamorano, U. Gustafsson, M. Larsson, P. Lindqvist, L. Brodin, A. Waldenstrom, B. Roosens, S. Hernot, S. Droogmans, G. Van Camp, T. Lahoutte, B. Cosyns, C. M. Rao, D. Aguglia, G. Casciola, C. Imbesi, A. Marvelli, M. Sgro, D. Benedetto, R. Tripepi, C. Zoccali, F. A. Benedetto, L. P. Badano, M. Cardillo, L. Del Mestre, P. Gianfagna, A. Proclemer, H. D. Tschernich, B. Mora, E. Base, U. Weber, J. Dumfarth, C. Mukherjee, H. S. Skaltsiotis, A. K. Kaladaridis, D. B. Bramos, G. K. Kottis, A. A. Antoniou, I. A. Agrios, D. T. Takos, N. V. Vasiladiotis, K. P. Pamboucas, S. T. T. Toumanidis, A. Shim, P. Lipec, B. Michalski, B. Wozniakowski, L. Stefanczyk, A. Rotkiewicz, M. Cameli, M. Lisi, M. Padeletti, E. Bigio, S. Bernazzali, C. Tsoulpas, M. Maccherini, M. Henein, S. Mondillo, I. Garcia Lunar, S. Mingo Santos, V. Monivas Palomero, C. Mitroi, P. Beltran Correas, L. Ruiz Bautista, A. Muniz Lozano, M. Gonzalez Gonzalez, B. Stegemann, K. Willson, R. Zeppellini, A. Iavernaro, M. Zadro, M. Carasi, R. De Domenico, T. Rigo, E. Artuso, G. Erente, A. Ramondo, T. T. Le, F. Q. Huang, Y. Gu, and R. S. Tan
- Subjects
Cardiac function curve ,medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,Ventricle ,Internal medicine ,medicine ,Cardiology ,Radiology, Nuclear Medicine and imaging ,General Medicine ,Cardiology and Cardiovascular Medicine ,Rotation ,business - Published
- 2010
- Full Text
- View/download PDF
9. ÖĞRENCİ VE ÖĞRETMENLERİN FEN VE TEKNOLOJİ DERSİNİN YAŞAMIMIZDAKİ SÜRAT KONUSUNDAKİ MATEMATİK BECERİLERİ ÜZERİNE GÖRÜŞLERİ
- Author
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V. Aytekin Sanalan, Ali Sülün, and Esin Oktay Ciminli
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Fen,Matematik,Fen ile matematik arasındaki ilişki,Matematiğe karşı tutum,Matematik öğretimi ,ComputingMilieux_COMPUTERSANDEDUCATION ,Science,Mathematics,Integration of Mathematics into Science Teaching,Mathematical skills,Mathematics teaching - Abstract
The aim of this work is determining that the mathematics teaching skills of science and technology teachers and whether or not sixth grade students and science and technology teachers experience difficulty about teaching of subjects which contain mathematical concepts. In this work, the views of science and technology teachers about their mathematical teaching skills in the subject of speed in our lives and about this subject the views of sixth grade students about the mathematical teaching skills of science and technology teachers and whether or not these views are differentiated according to demographical variables were researched. In addition to these, the opinions of students and teachers were compared each other. The model of this research is scanning method. This research was performed in schools which are connected to the center of Erzincan in the academic year 20092010 on 346 sixth grade students and 41 teachers who lecture to sixth graduate students. In this research, science and technology teachers, and two different scales which are improved for sixth graduate students were used. In order to analyze data sets, average, standard deviation, frequency distribution, t-test between independent groups and Kruskal-Wallis test were used. As a result of data sets analysis, it was determined that science and technology teachers who participated in research feel sufficient in terms of mathematical teaching skills and sixth grade students find science and technology teachers sufficient about their mathematical teaching skills. In addition to these, it was also determined that the views of science and technology teachers about their mathematical teaching skills according to gender, period of service and department of graduation , and the views of sixth graduate students about science and technology teachers’ mathematical skills according to gender are not differentiated, but the views of science and technology teachers about their mathematical skills are differentiated according to higher education program of graduation., Bu çalışma, Fen ve Teknoloji dersinin “Yaşamımızdaki Sürat” konusunda, Fen ve Teknoloji öğretmenlerinin ve 6. sınıf öğrencilerinin, matematiksel kavramları içeren konuların öğretiminde sorun yaşayıp yaşamadıklarının tespiti amacıyla yapılmıştır. Araştırmada, Fen ve Teknoloji öğretmenlerinin “Yaşamımızdaki Sürat” konusundaki matematik öğretimi becerileriyle ilgili görüşleri ile bu konuda 6. sınıf öğrencilerinin Fen ve Teknoloji öğretmenlerinin matematik öğretimi becerilerine ilişkin görüşleri ve bu görüşlerin demografik değişkenlere göre farklılaşıp farklılaşmadığı araştırılmıştır. Ayrıca öğretmen ve öğrenci görüşleri de karşılaştırılmıştır. Araştırmanın modeli “tarama” yöntemidir. Araştırma, Erzincan ilinin merkeze bağlı ilköğretim okullarında (ortaokullarında), 2009-2010 Eğitim-Öğretim yılında 6. sınıflarda Fen ve Teknoloji dersini yürüten 41 öğretmen ve 6. sınıfta öğrenim görmekte olan 346 öğrenci üzerinde gerçekleştirilmiştir. Araştırmada veri toplama aracı olarak, Fen ve Teknoloji öğretmenleri ve 6. sınıf öğrencileri için araştırmacılar tarafından geliştirilmiş olan iki tür ölçek kullanılmıştır. Verilerin çözümlenmesinde ortalama, standart sapma, frekans dağılımı, bağımsız gruplar arası t-testi ve Kruskal-Wallis testinden yararlanılmıştır. Elde edilen verilerin analizi sonucunda, araştırmaya katılan Fen ve Teknoloji öğretmenlerinin, matematik öğretimi becerileri açısından kendilerini yeterli gördükleri ve 6. sınıf öğrencilerinin de Fen ve Teknoloji öğretmenlerinin matematik öğretimi becerilerini yeterli buldukları belirlenmiştir. Fen ve Teknoloji öğretmenlerinin matematik öğretimi becerilerine ilişkin görüşlerinin, hizmet süresine ve mezun olunan alana göre, 6. sınıf öğrencilerinin ise Fen ve Teknoloji öğretmenlerinin matematik öğretimi becerilerine ilişkin görüşlerinin Fen ve Teknoloji öğretmenlerinin görüşlerinin mezun olunan yükseköğretim programına göre farklılaştığı tespit edilmiştir.
- Published
- 2014
10. VISUAL LITERACY
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SANALAN, V. Aytekin, SÜLÜN, Ali, and ÇOBAN, T. Abdulkadir
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Visual Literacy,Visuality,Seeing,Visual Learning ,Education and Educational Research ,ComputerApplications_MISCELLANEOUS ,ComputingMilieux_COMPUTERSANDEDUCATION ,Eğitim, Eğitim Araştırmaları ,Görsel Okuryazarlık,Görsellik,Görme,Görsel Öğ - Abstract
Research on literacy has been continuously developed and improved in the last few decades. These developments create new frameworks for functional literacy, science literacy, computer literacy, mathematics literacy, information literacy, media literacy and critical literacy. To be able to complete the picture of literacy, visual literacy too, should be described and defined since all other literacies contributing to general literacy have their own jargon and study tools. In this study, visual literacy is throughly investigated using the findings from the literature, and a conceptual framework is proposed to emphasize its importance., Bilim okuryazarlığı alanında sürekli olarak artan değişim ve gelişimlere tanıklık edilmektedir. Bu değişimler ve gelişmeler; eğitim ve öğretimde fen okuryazarlığının (fizik, kimya ,biyoloji), bilgisayar okuryazarlığının, matematik okuryazarlığının, bilgi okuryazarlığının, iletişim okuryazarlığının, kültürel okuryazarlığının ve eleştirel okuryazarlığının yeni açılımlarla karşı karşıya kalmasına neden olmuştur. Ancak, bu kavramları anlamlandırmak için, genel anlamda kullanılan okuryazarlığın, her bir okuryazarlık alanından izole edildiği ve her biri kendine ait bir sözlüğe ve çalışma geleneğine sahip olduğunu göz önünde bulundurarak, görsel okuryazarlığın da tanımlanması ve anlamlandırılması gerekmektedir. Bu yüzden, bu çalışmada, görsel okuryazarlık açıklanıp, önemi vurgulanarak kavramsal bir anlayış getirilmiştir.
- Published
- 2012
11. FEN BİLGİSİ ÖĞRETİMİ DERSİNDE ÖZGÜN DENEY TASARIM SÜRECİNİN ÖĞRETMEN ADAYININ ÖZ YETERLİLİK ALGISINA ETKİSİ
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ÇOBAN, Abdülkadir and SANALAN, V. Aytekin
- Subjects
Education and Educational Research ,Self-efficacy,science teaching,authentic hands-on activity ,Eğitim, Eğitim Araştırmaları ,Öz yeterlik algısı,fen öğretimi,özgün deney tasarımı - Abstract
Preservice teachers' self efficacy belief is considered to increase their teaching performance. The purpose of this study is to investigate how designing original experimental activities affects science teaching self efficacy beliefs among elementary teacher candidates. Sample of this study is randomly selected and assigned into two groups; as experimental and control groups (N=97). Experiemental group has designed original hands-on activities while control group has done the experiments planned beforhand by researcher. The instrument used to measure self-efficacy belief is adapted from STEBI-B and consists of 28 Likert-type items. Data analysis is carried out by deploying two-way ANOVA. The results show that preservice teachers who participate in the design of original experimental activities had significantly higher science teaching self efficacy belief scores compared to those of who have not produced original activities. Experimental group also shows more creativity in planning teaching styles, and tendency to use project-based teaching techniques. Some recommendations are made to increase preservice elementary teachers' science teaching self efficacy believes., Öğretmen adaylarının mesleki hayatlarına hazırlanırken öz yeterlik inancının onların öğretme performanslarını artırdığı düşünülmektedir. Bu nedenle öğretmenlerin öz yeterlik algısının arttırılması önemli bir hedef olarak görülmektedir. Bu çalışmanın amacı, sınıf öğretmeni adaylarında özgün deney tasarımının fen öğretimi öz yeterlik algısı üzerindeki etkisini araştırmaktır. Çalışmanın örneklemini 97 sınıf öğretmenliği öğrencisi oluşturmaktadır. Bu öğrencilerden 49'u deney grubunu, 48'i de kontrol grubunu oluşturmuşlardır. Dersin ortak hedefleri doğrultusunda deney grubundan “özgün“ deneyler tasarlamaları istenirken, kontrol grubundan hazır deney etkinlikleri yapmaları istenmiştir. Dersin öğretim elemanı özgünlük koşulu sağlanıncaya kadar deney grubundaki öğrencilerle amaca dönük nitelikte ve sayıda görüşmeler yapmıştır. Dönemin sonunda da her iki gruptaki öğrencilerin öz yeterlikleri, Türkçe'ye uyarlanmış “Science Teaching Efficacy Belief Inventory for preservice teachers” ölçeğiyle ölçülmüştür. Elde edilen öz yeterlik puanları grup (deneykontrol) ve cinsiyet (K-E) faktörlerine göre iki yönlü ANOVA ile karşılaştırılmıştır. Karşılaştırmalar sonucunda, öz yeterlik düzeyi deney grubunda kontrol grubuna göre anlamlı düzeyde yüksek çıkmış, cinsiyete göre farklılaşma görülmemiş, ayrıca faktörler arasında çapraz etkileşim görülmemiştir. Bulgulardan ve görüşmeler sırasında elde edilen izlenimlerden özgün deney tasarlama sürecinin, öğretmen adaylarına yaratıcı öğretim etkinlikleri geliştirme güveni verdiği sonucuna varılmıştır. Bu sonuca dayanarak fen bilgisi öğretimi derslerinde yaratıcı etkinliklere daha çok yer verilmesi önerilmektedir.
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- 2012
12. ELECTRONIC PORTFOLIO AS A DATABASE APPLICATION
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SANALAN, V. Aytekin and ALTUN, Arif
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Education and Educational Research ,Web-tabanlı öğretim,elektronik portfolyo,portfolyo değerlendirmesi,akademik okuma-yazma,eğitimde veritabanı kullanımı ,Eğitim, Eğitim Araştırmaları ,Web-based instruction,electronic portfolio,portfolio assessment,academic reading-writing,database in education - Abstract
Bu çalışmada Amerika Birleşik Devletleri’nde (ABD) bir üniversitede Akademik okuma-yazma dersinde kullanılmak üzere hazırlanmış ve uygulanmış olan web tabanlı bir ölçme-değerlendirme arayüzü olan elektronik portfolyonun (e-portfolyo) tasarımı, kullanımı, özellikleri ve öğrenciler tarafından yapılan değerlendirme sonuçları sunulmaktadır. Ayrıca, e-portfolyonun sınıf içinde kullanımı ile ortaya çıkan sonuçlara dayalı olarak e-portfolyonun avantajları ve dezavantajları tartışılacaktır., In this study, an electronic portfolio application with a web interface is investigated as an assessment and evaluation instrument. E-portfolio is constructed to implement in academic reading and writing course of an American university. The study explores the design, application, characteristics, and evaluation results of the e-portfolio along with the recommendation of students. Furthermore, pros and cons of e-portfolio is discussed on the basis of application results in the classroom.
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- 2012
13. ÖĞRENCİ VE ÖĞRETMENLERİN FEN VE TEKNOLOJİ DERSİNİN YAŞAMIMIZDAKİ SÜRAT KONUSUNDAKİ MATEMATİK BECERİLERİ ÜZERİNE GÖRÜŞLERİ
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SÜLÜN, Ali, primary, OKTAY CİMİNLİ, Esin, additional, and SANALAN, V. Aytekin, additional
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- 2014
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14. A left pulmonary artery aneurysm secondary to pulmonary hypertension
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B, Sonmez, S, Tansal, M, Unal, A, Korkut, N, Yagan, E, Demirsoy, H, Arbatli, and V, Aytekin
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Blood Vessel Prosthesis Implantation ,Cardiopulmonary Bypass ,Hypertension, Pulmonary ,Anastomosis, Surgical ,Humans ,Female ,Pulmonary Artery ,Coronary Angiography ,Aneurysm ,Aged - Abstract
We report a case of pulmonary trunk aneurysm extending into the left pulmonary artery, due to pulmonary hypertension secondary to mitral valve disease. The mitral valve was replaced with a bileaflet mechanical prosthesis. A Dacron graft interposed between main trunk and left pulmonary artery branch, and right pulmonary branch attached to the graft in an end-to-side fashion. Early postoperative angiogram revealed a very successful treatment.
- Published
- 2001
15. Off-pump coronary artery bypass grafting with use of the octopus 2 stabilization system
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B, Akpinar, M, Güden, E, Sagbas, I, Sanisoglu, V, Aytekin, and O, Bayindir
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Male ,Cardiopulmonary Bypass ,Equipment Safety ,Graft Survival ,Coronary Disease ,Middle Aged ,Risk Assessment ,Severity of Illness Index ,Survival Rate ,Postoperative Complications ,Treatment Outcome ,Humans ,Female ,Prospective Studies ,Coronary Artery Bypass ,Vascular Patency ,Aged ,Follow-Up Studies - Abstract
The treatment of coronary artery disease has evolved rapidly over the last two decades. The gold standard of surgical revascularization, the on-pump coronary artery bypass graft, has been challenged by the development of percutaneous transluminal coronary angioplasty. Our experience with the alternative of the off-pump ("beating heart") coronary artery bypass (OPCAB) technique during a period of 18 months suggests that OPCAB avoids the complications of cardiopulmonary bypass and offers patients the benefit of long-term graft patency that greatly exceeds that of current endovascular technologies.The early results of 126 OPCAB procedures performed through a medial sternotomy incision during a period of 18 months were evaluated. There were 80 male and 46 female patients, with a mean age of 69 +/- 4.3 years. Emergency cases and reoperations were not included. A total of 268 anastomoses were performed, with a mean number of 2.12 anastomoses per patient. Conduits used, with their percentage of use, were: left internal thoracic artery (LITA) (100%), right internal thoracic artery (11.1%), greater saphenous vein (84%), and radial artery (31%). In 72% of the cases, off-pump surgery was chosen because of patient risk factors such as atherosclerotic aortic disease, previous cerebrovascular accident or carotid artery disease, renal dysfunction, malignancy or poor left ventricular function.There was no operative mortality. One-month postoperative mortality was three patients (2.3%). Two died because of mesenteric ischemia, and the other death was due to cardiac failure. Seventy-one patients had a control angiogram before discharge. The patency of LITA anastomosis was 100% while overall patency rate was 95%. In 43 patients for whom an angiogram could not be performed, a Thallum 201 stress test was performed three months postoperatively. Thirty-eight patients had a normal test while five patients showed signs of ischemia. These patients had a control angiogram: in four patients anastomoses were patent, but in one patient there was a severe narrowing of a venous anastomosis to the distal right coronary artery (RCA) which was corrected with angioplasty. In the whole series eight patients (6.3%) refused to have any control examination.Our early results suggest that off-pump CABG with Octopus 2 (Medtronic, Inc., Minneapolis, MN) can be a good alternative in high risk patients who need multiple vessel revascularization.
- Published
- 2000
16. Andrade's Creep Law and the Flow of Zinc Crystals
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Alan Cottrell and V. Aytekin
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Multidisciplinary ,Materials science ,Strain (chemistry) ,Metallurgy ,chemistry.chemical_element ,Thermodynamics ,Zinc ,Plasticity ,Metal ,Creep ,chemistry ,Flow (mathematics) ,visual_art ,visual_art.visual_art_medium ,Crystallite ,Constant (mathematics) - Abstract
Studying the plastic flow of polycrystalline metallic wires under constant tensile stress, Andrade1 showed that, after an instantaneous extension accompanying loading, the flow could be separated into two components: (1) β-flow, characterized by γ α t1/3, where γ is the strain and t the time, and (2) a flow, described as viscous, obeying the law γ α t. It was thus found that the extension could be expressed generally by the equation
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- 1947
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17. Is There a Need for Sex-Tailored Lipoprotein(a) Cut-Off Values for Coronary Artery Disease Risk Stratification?
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Yurtseven E, Ural D, Gursoy E, Cunedioglu BO, Guler OU, Baysal K, Aytekin S, Aytekin V, and Kayikcioglu M
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- Humans, Female, Male, Middle Aged, Risk Assessment methods, Sex Factors, Aged, Risk Factors, Retrospective Studies, Republic of Korea epidemiology, Adult, Multivariate Analysis, Predictive Value of Tests, Heart Disease Risk Factors, Prognosis, Coronary Artery Disease blood, Coronary Artery Disease diagnosis, Coronary Artery Disease epidemiology, Lipoprotein(a) blood, Biomarkers blood
- Abstract
Background: Lipoprotein(a) [Lp(a)] plasma level is a well-known risk factor for coronary artery disease (CAD). Existing data regarding the influence of sex on the Lp(a)-CAD relationship are inconsistent., Objective: To investigate the relationship between Lp(a) and CAD in men and women and to elucidate any sex-specific differences that may exist., Methods: Data of patients with Lp(a) measurements who were admitted to a tertiary university hospital, Koc University Hospital, were analyzed. The relationship between Lp(a) levels and CAD was explored in all patients and in subgroups created by sex. Two commonly accepted Lp(a) thresholds ≥ 30 and ≥ 50 mg/dL were analyzed., Results: A total of 1858 patients (mean age 54 ± 17 years; 53.33% females) were included in the analysis. Lp(a) was an independent predictor of CAD according to the multivariate regression model for the entire cohort. In all cohort, both cut-off values (≥ 30 and ≥ 50 mg/dL) were detected as independent predictors of CAD (p < 0.001). In sex-specific analysis, an Lp(a) ≥ 30 mg/dL was an independent predictor of CAD only in women (p < 0.001), but Lp(a) ≥ 50 mg/dL was a CAD predictor both in men and women (men, p = 0.004; women, p = 0.047)., Conclusion: The findings of this study may suggest that different thresholds of Lp(a) level can be employed for risk stratification in women compared to men., (© 2024 The Author(s). Clinical Cardiology published by Wiley Periodicals LLC.)
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- 2024
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18. The Relationship of Systolic Pulmonary Artery Pressure with Perioperative Mortality and Morbidity in Patients Undergoing Non-Cardiac Surgery: A Single-Center Experience.
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Cengiz Elçioglu B, Gürsoy E, Helvacı F, Tefik N, Baydar O, Kılıç A, Demirci Y, Aslan G, Yurtseven E, Aytekin V, and Aytekin S
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- Humans, Retrospective Studies, Echocardiography, Morbidity, Pulmonary Artery diagnostic imaging, Hypertension, Pulmonary epidemiology
- Abstract
Objective: Pulmonary hypertension (PH) is associated with adverse perioperative events in patients undergoing non-cardiac surgery. In this study, we aimed to investigate the relationship between systolic pulmonary artery pressure (sPAP), evaluated by transthoracic echocardiography (TTE) before surgery, and perioperative mortality and morbidity in patients who underwent non-cardiac surgery in our center., Methods: Of the 3425 retrospectively screened patients who underwent non-cardiac surgery, 3049 patients whose estimated sPAP values were previously determined by TTE were included in the study. Patients were classified into 3 groups according to their estimated sPAP levels. sPAP <35 mmHg formed group 1, 35-39 mmHg group 2, and ≥ 40 mmHg group 3. All demographic and perioperative data obtained from the database of our institute were compared in three groups., Results: Of the 3049 patients enrolled in the study, 2406 (78.9%) were in group 1, 259 (8.5%) in group 2, and 384 (12.6%) in group 3. Thirty-day all-cause mortality was observed in 82 (2.7%) patients, cardiac mortality occurred in 9 patients (0.3%). In the group with sPAP ≥40 mmHg, cardiac mortality was 0.5% and all-cause mortality was 7.3%. Thirty-day all-cause mortality, acute pulmonary edema, and acute renal failure were significantly higher in group 3 than in the other groups. Cardiac mortality did not differ significantly between the groups. Age, sPAP value, and chronic obstructive pulmonary disease history were revealed as independent predictors of all-cause mortality in multivariate logistic regression analysis., Conclusion: In conclusion, increased sPAP is associated with adverse postoperative outcomes. The evaluation of sPAP with TTE before non-cardiac surgery in patients whose clinical features and examination findings suggest PH may contribute to preoperative risk assessment.
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- 2023
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19. Evaluation of Aortic Elasticity Parameters Measured by Transthoracic Echocardiography in a Normotensive Population: A Single-Center Study.
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Cengiz Elçioglu B, Kılıç A, Baydar O, Şahin ŞT, Çelik HG, Aytekin V, and Aytekin S
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- Female, Humans, Male, Atherosclerosis diagnostic imaging, Echocardiography, Retrospective Studies, Adult, Middle Aged, Age Factors, Heart Disease Risk Factors, Reference Values, Aorta diagnostic imaging, Aorta physiology, Elasticity physiology
- Abstract
Objective: Impaired arterial elastic features is one of the earliest manifestations of atherosclerosis in the vessel wall and is associated with the development of cardiovascular disease and increased mortality and morbidity. In this study, we aimed to investigate the mean values of aortic elasticity parameters in a normotensive population with transthoracic echocardiography and to evaluate these values in different age groups and their relationship with other risk factors., Methods: This retrospective study included 405 subjects who met the inclusion criteria among 2880 individuals screened between 2020 and 2022. The study population was divided into 5 groups according to their age. Aortic elasticity parameters (aortic strain, aortic stiffness index, and aortic distensibility) were calculated from the associated formulas by measurements made from the ascending aorta in the parasternal long axis., Results: In 405 subjects (mean age 42.18 ± 10.39, 54.3% female), the mean aortic strain value was 15.14 ± 3.56%, the mean aortic stiffness index was 3.24 ± 1.05, and the mean aortic distensibility was 7.48 ± 2.36 cm2/dyn1/103. It was observed that aortic strain and distensibility values significantly decreased with increasing age groups, while aortic stiffness significantly increased. All 3 aortic elasticity parameters were strongly correlated to age. In the multivariate linear regression analysis, age was found to be an independent factor for all aortic elasticity parameters., Conclusion: Aortic elasticity parameters can be evaluated with transthoracic echocardiography in daily practice. Comparing these measurements with normal values in similar age groups may help to detect patients with increased cardiovascular risk in the early period, regardless of the other risk factors.
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- 2023
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20. Obstructive Sleep Apnea and Cardiovascular Disease: Where Do We Stand?
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Peker Y, Akdeniz B, Altay S, Balcan B, Başaran Ö, Baysal E, Çelik A, Dursunoğlu D, Dursunoğlu N, Fırat S, Gündüz Gürkan C, Öztürk Ö, Taşbakan MS, and Aytekin V
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- Adult, Humans, Risk Factors, Continuous Positive Airway Pressure adverse effects, Cardiovascular Diseases, Sleep Apnea, Obstructive complications, Sleep Apnea, Obstructive therapy, Cardiovascular System, Sleep Apnea Syndromes complications
- Abstract
Obstructive sleep apnea is common in adults with cardiovascular disease. Accumulating evidence suggests an association between obstructive sleep apnea and cardiovascular disease independent of the traditionally recognized cardiovascular disease risk factors. Observational studies indicate that obstructive sleep apnea is a risk factor for development of cardiovascular disease and that alleviation of obstructive events with positive airway pressure may improve cardiovascular disease outcomes. However, recent randomized controlled trials have not supported the beneficial effect of positive airway pressure in cardiac populations with concomitant obstructive sleep apnea. Some evidence suggests that the relationship between obstructive sleep apnea and traditionally recognized cardiovascular disease risk factors is bidirectional, suggesting that patients with cardiovascular disease may also develop obstructive sleep apnea and that efficient treatment of cardiovascular disease may improve obstructive sleep apnea. Recent data also indicate that the apnea-hypopnea index, which is commonly used as a diagnostic measure of obstructive sleep apnea severity, has limited value as a prognostic measure for cardiovascular disease outcomes. Novel markers of obstructive sleep apnea-associated hypoxic burden and cardiac autonomic response seem to be strong predictors of adverse cardiovascular disease outcomes and response to treatment of obstructive sleep apnea. This narrative review and position paper from the Turkish Collaboration of Sleep Apnea Cardiovascular Trialists aims to update the current evidence about the relationship between obstructive sleep apnea and cardiovascular disease and, consequently, raise awareness for health professionals who deal with cardiovascular and respiratory diseases to improve the ability to direct resources at patients most likely to benefit from treatment of obstructive sleep apnea and optimize treatment of the coexisting cardiovascular diseases. Moreover, the Turkish Collaboration of Sleep Apnea Cardiovascular Trialists aims to contribute to strengthening the efforts of the International Collaboration of Sleep Apnea Cardiovascular Trialists in this context.
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- 2023
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21. Evaluation of pulmonary arterial stiffness and comparison with right ventricular functions in patients with cirrhosis preparing for liver transplantation.
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Elçioğlu BC, Baydar O, Helvacı F, Karataş C, Aslan G, Kılıç A, Tefik N, Demir B, Gürsoy E, Demirci Y, Ural D, Kanmaz T, Aytekin V, and Aytekin S
- Subjects
- Adult, Humans, Male, Middle Aged, Stroke Volume, Vascular Remodeling, Ventricular Dysfunction, Right complications, Ventricular Dysfunction, Right diagnostic imaging, Ventricular Function, Left, Ventricular Function, Right, Hypertension, Pulmonary complications, Hypertension, Pulmonary diagnostic imaging, Liver Cirrhosis complications, Liver Cirrhosis surgery, Liver Transplantation adverse effects, Vascular Stiffness
- Abstract
Objective: Pulmonary complications are common in patients with liver cirrhosis. Devolopment of pulmonary hypertension (PH) is associated with a poor prognosis in these patients. Pulmonary arterial stiffness (PAS) is considered an early sign of pulmonary vascular remodeling. The aim of this study is to investigate PAS and compare it with right ventricular (RV) functions in patients with cirrhosis who are scheduled for liver transplantation., Methods: The study included 52 cirrhosis patients (mean age 51.01 ± 12.18 years, male gender 76.9%) who were prepared for liver transplantation and 59 age and sex matched (mean age 51.28 ± 13.63 years, male gender 62.7%) healthy individuals. Patients with left ventricular ejection fraction (LVEF) less than 55%, ischemic heart disease, more than mild valvular heart disease, chronic pulmonary disease, congenital heart disease, rheumatic disease, moderate to high echocardiographic PH probability, rhythm or conduction disorders on electrocardiography were excluded from the study. In addition to conventional echocardiographic parameters, PAS value, pulmonary vascular resistance (PVR) and RV ejection efficiency was calculated by the related formulas with transthoracic echocardiography (TTE)., Results: Demographic characteristics and cardiovascular risk factors of the groups were similar. PAS, PVR, and sPAP values were found to be significantly higher in the patient group (20.52 ± 6.52 and 13.73 ± 2.05; 1.43 ± 0.15 and 1.27 ± 0.14; 27.69 ± 3.91 and 23.37 ± 3.81 p < 0.001, respectively). RV FAC and RV Ee were significantly lower and RV MPI was significantly higher in the patient group (45.31 ± 3.85 and 49.66 ± 3.62, p < 0.001; 1.69 ± 0.35 and 1.85 ± 0.23, p = 0.005; 0.39 ± 0.07 and 0.33 ± 0.09, p = 0.001, respectively). PAS was significantly correlated with RV FAC and MPI (r = -0.423, p < 0.001; r = 0.301, p = 0.001, respectively)., Conclusions: Increased PAS in cirrhosis patients may be associated with early pulmonary vascular involvement. Evaluation of RV functions is important to determine the prognosis in these patients. FAC, MPI, and RV Ee measurements instead of TAPSE or RV S' may be more useful in demonstrating subclinical dysfunction. The correlation of PAS with RV FAC and MPI may indicate that RV subclinical dysfunction is associated with early pulmonary vascular remodeling in patients with liver cirrhosis., (© 2022 Wiley Periodicals LLC.)
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- 2022
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22. Effects of iron deficiency on left ventricular functions in young women regardless of anemia: A speckle tracking echocardiography study.
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Elçioğlu BC, Baydar O, Kılıç A, Tefik N, Helvacı F, Gürsoy E, Demirci Y, Ural D, Aytekin V, and Aytekin S
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- Humans, Female, Ventricular Function, Left, Reproducibility of Results, Echocardiography methods, Ferritins, Iron Deficiencies, Anemia
- Abstract
Background: Iron deficiency is one of the most common metabolic disorders worldwide and affects multiple organs and systems including the cardiovascular (CV) system. Iron deficiency can cause structural and functional changes in the myocardium. The aim of the study is to evaluate left ventricular (LV) functions in patients with low ferritin levels without anemia by two-dimensional "speckle tracking" echocardiography (2D STE)., Methods: We studied 90 participants (all female) that were divided into two groups according to ferritin levels (49 patients with ferritin levels <30 ng/mL, 41 age-matched controls with >30 ng/mL). Patients with anemia (hemoglobin level <12 g/dL), known CV disease, diabetes mellitus, low ejection fraction (<55%), active infection, high ferritin levels (>200 ng/mL) were excluded. All patients were evaluated by transthoracic echocardiography. In addition to conventional echocardiographic parameters and Doppler measurements, LV global longitudinal strain (GLS) and strain rate (GLSR) were obtained by 2D STE., Results: Mean ferritin level was 18.96 ± 7.29 ng/mL in low ferritin group, and was 61.22 ± 26.14 ng/mL in control group. There were no significant differences according to conventional and Doppler echocardiographic parameters between the groups. LV GLS and GLSR values were significantly lower in low ferritin group comparing with control group (17.31% ± 1.56 and 18.96% ± 1.53, p < 0.001; 0.64 ± 0.13 1/s and 0.81 ± 0.13 1/s, p < 0.001, respectively). There was a significant positive correlation between ferritin levels and LV GLS and GLSR values in study group (r = 0.482, p < 0.001; r = 0.387, p < 0.001, respectively). Ferritin level was also detected as an independent risk factor for GLS value < -18% in logistic regression analysis. In ROC curve analysis, the area under the curve for predicting GLS < -18% was 0.801 (p < 0.001, 95% CI 0.70-0.89) and the threshold of ferritin value was 28.5 ng/mL (sensitivity 76.1%, specificity 77.3%)., Discussion: Low ferritin levels can cause subclinical LV systolic dysfunction in patients without anemia. STE provides detailed information about LV functions. With larger studies, these patients should be followed more closely and considered for iron replacement treatment before developing anemia.
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- 2022
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23. Why we should be more careful using hydroxychloroquine in influenza season during COVID-19 pandemic?
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Çelik HG, Keske Ş, Şener Ü, Tekbaş M, Kapmaz M, Şahin ŞT, Özyıldırım A, Aytekin S, Aytekin V, and Ergönül Ö
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- Adult, Aged, Aged, 80 and over, Azithromycin administration & dosage, Electrocardiography drug effects, Female, Humans, Hydroxychloroquine administration & dosage, Male, Middle Aged, Oseltamivir adverse effects, Oseltamivir therapeutic use, Hydroxychloroquine adverse effects, Influenza, Human drug therapy, Long QT Syndrome chemically induced, SARS-CoV-2, COVID-19 Drug Treatment
- Abstract
The aim of this study was to describe the QTc prolongation and related adverse cardiac events during the administration of hydroxychloroquine (HCQ) and its combinations for the treatment of coronavirus disease 2019 (COVID-19). Hospitalized patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) who received HCQ and had initial and follow-up electrocardiograms performed between March 10 and May 30, 2020 were included. Critical QTc prolongation was detected in 12% of the patients. On multivariate analysis, diabetes mellitus (odds ratio 5.8, 95% confidence interval 1.11-30.32, p = 0.037) and the use of oseltamivir (odds ratio 5.3, 95% confidence interval 1.02-28, p = 0.047) were found to be associated with critical QTc prolongation., (Copyright © 2020 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2021
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24. [Turkish Cardiology Association Consensus Report: COVID-19 Pandemic and Cardiovascular Diseases (May 13, 2020)].
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Aktoz M, Altay H, Aslanger E, Atalar E, Atar İ, Aytekin V, Baykan AO, Barçın C, Barış N, Boyacı A, Çavuşoğlu Y, Çelik A, Çinier G, Değertekin M, Demircan S, Ergönül Ö, Ertürk M, Erol MK, Görenek B, Gürsoy MO, Hünük B, Kahveci G, Karabay CY, Karaca I, Kayıkçıoğlu M, Keskin M, Kılıç T, KılıçkıranAvcı B, Kırma C, Kocabaş U, Kocakaya D, Küçükoğlu S, Mutlu B, Nalbantgil S, Okuyan E, Okyay K, KaptanÖzen D, Özgül S, Özpelit E, Pirat B, Sert S, Sinan ÜY, Şener YZ, Tatlı E, Tekkeşin Aİ, Tutar E, Ural D, Yıldırımtürk Ö, and Yıldızeli B
- Subjects
- Betacoronavirus, COVID-19, Cardiology standards, Consensus, Humans, Practice Guidelines as Topic, SARS-CoV-2, Cardiovascular Diseases complications, Cardiovascular Diseases therapy, Coronavirus Infections complications, Coronavirus Infections epidemiology, Pandemics, Pneumonia, Viral complications, Pneumonia, Viral epidemiology
- Abstract
In December 2019, in the city of Wuhan, in the Hubei province of China, treatment-resistant cases of pneumonia emerged and spread rapidly for reasons unknown. A new strain of coronavirus (severe acute respiratory syndrome coronavirus-2 [SARS-CoV-2]) was identified and caused the first pandemic of the 21st century. The virus was officially detected in our country on March 11, 2020, and the number of cases increased rapidly; the virus was isolated in 670 patients within 10 days. The rapid increase in the number of patients has required our physicians to learn to protect both the public and themselves when treating patients with this highly infectious disease. The group most affected by the outbreak and with the highest mortality rate is elderly patients with known cardiovascular disease. Therefore, it is necessary for cardiology specialists to take an active role in combating the epidemic. The aim of this article is to make a brief assessment of current information regarding the management of cardiovascular patients affected by COVID-19 and to provide practical suggestions to cardiology specialists about problems and questions they have frequently encountered.
- Published
- 2020
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25. [Consensus Report from Turkish Society of Cardiology: COVID-19 and Cardiovascular Diseases. What cardiologists should know. (25th March 2020)].
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Aktoz M, Altay H, Aslanger E, Atalar E, Aytekin V, Baykan AO, Barçın C, Barış N, Boyacı AA, Çavuşoğlu Y, Çelik A, Çinier G, Değertekin M, Ergönül Ö, Ertürk M, Erol MK, Görenek B, Gürsoy MO, Hünük B, Kahveci G, Karabay CY, Karaca I, Kayıkçıoğlu M, Keskin M, Kılıç T, Kırma C, Kocabaş U, Küçükoğlu S, Mutlu B, Nalbantgil S, Okuyan E, Okyay K, Kaptan Özen D, Özgül S, Özpelit E, Pirat B, Sert S, Sinan ÜY, Şener YZ, Tatlı E, Tekkeşin Aİ, Tutar E, Ural D, and Yıldırımtürk Ö
- Subjects
- COVID-19, Cardiovascular Diseases epidemiology, Consensus, Humans, Pandemics, SARS-CoV-2, Societies, Medical, Turkey, Betacoronavirus, Cardiology standards, Cardiovascular Diseases therapy, Cardiovascular Diseases virology, Coronavirus Infections epidemiology, Pneumonia, Viral epidemiology
- Abstract
In December 2019, in the city of Wuhan, in the Hubei province of China, treatment-resistant cases of pneumonia emerged and spread rapidly for reasons unknown. A new strain of coronavirus (severe acute respiratory syndrome coronavirus-2 [SARS-CoV-2]) was identified and caused the first pandemic of the 21st century. The virus was officially detected in our country on March 11, 2020, and the number of cases increased rapidly; the virus was isolated in 670 patients within 10 days. The rapid increase in the number of patients has required our physicians to learn to protect both the public and themselves when treating patients with this highly infectious disease. The group most affected by the outbreak and with the highest mortality rate is elderly patients with known cardiovascular disease. Therefore, it is necessary for cardiology specialists to take an active role in combating the epidemic. The aim of this article is to make a brief assessment of current information regarding the management of cardiovascular patients affected by COVID-19 and to provide practical suggestions to cardiology specialists about problems and questions they have frequently encountered.
- Published
- 2020
- Full Text
- View/download PDF
26. A rare cause of acute coronary syndromes in young adults - myeloproliferative neoplasms: A case series.
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Cengiz B, Aytekin V, Bildirici U, Sahin ST, Yurdakul S, Aytekin S, and Kucukkaya R
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- Adult, Blood Cell Count, Female, Humans, Male, Middle Aged, Retrospective Studies, Acute Coronary Syndrome diagnosis, Acute Coronary Syndrome etiology, Myeloproliferative Disorders complications, Myeloproliferative Disorders diagnosis, Myeloproliferative Disorders physiopathology
- Abstract
Introduction: Acute coronary syndromes (ACS) mostly occur in patients with traditional risk factors. Especially in young adults without major cardiovascular (CV) risk factors, one of the less common causes of ACS is myeloproliferative neoplasms (MPNs)., Methods: We retrospectively collected data on 11 consecutive patients (nine men, two women, mean age 40.18±8.4 years) with a diagnosis of MPN who presented with ACS. The demographic characteristics of the study population, type of MPN, clinical manifestations, location of myocardial infarction (MI), coronary angiography findings, complete blood count and other related findings, and treatment strategy before and after diagnosis were analyzed., Results: Six patients were diagnosed with polycythemia vera, four with essential thrombocytosis and one with primary myelofibrosis. A JAK2 mutation was found in nine patients. Mean time to diagnosis of MPN was 2.81 years after presenting ACS and mean age at first MI was 32.9±6 years. Six patients had no major CV risk factors. Ten patients had anterior MI and one had inferior MI. After initiation of specific treatment for MPN, no recurrent thrombotic events were observed in a mean follow-up of 4±2.44 years., Conclusions: In young adults presenting with ACS, MPNs should be considered, especially in the absence of atherosclerotic coronary artery lesions. It is also important to pay attention to blood cell count abnormalities seen in intracoronary thrombotic events. Early diagnosis and treatment of MPNs is essential to prevent recurrence of thrombotic events and may reduce mortality and morbidity related to thrombotic complications., (Copyright © 2019 Sociedade Portuguesa de Cardiologia. Publicado por Elsevier España, S.L.U. All rights reserved.)
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- 2019
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27. Turkish Society of Cardiology consensus report on recommendations for athletes with high-risk genetic cardiovascular diseases or implanted cardiac devices.
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Özel E, Koşar MF, Ozcan EE, Hünük B, Ulus T, Aytekin V, Yildirir A, Özin B, Erdinler I, and Akyürek Ö
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- Cardiology, Humans, Societies, Medical, Turkey, Athletes, Cardiovascular Diseases, Death, Sudden, Cardiac prevention & control, Defibrillators, Implantable, Genetic Predisposition to Disease, Practice Guidelines as Topic
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- 2019
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28. The impact of TFPI on coronary atherosclerotic burden.
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Kahraman S, Erdim R, Helvacioglu F, Dogan A, Sozer V, Gunay D, Aytekin S, and Aytekin V
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- Carotid Intima-Media Thickness, Endothelium, Vascular physiopathology, Female, Humans, Male, Middle Aged, Prospective Studies, Statistics as Topic, Vasodilation physiology, Coronary Artery Disease physiopathology, Lipoproteins blood
- Abstract
Objectives: We aimed to associate a coronary artery disease (CAD) presence and severity with endothelial dysfunction (ED), carotid intima media thickness (CIMT) and Tissue Factor Pathway Inhibitor (TFPI)., Background: ED has a central role in atherosclerosis. CIMT and TFPI activity are also related with atherosclerosis and CAD., Methods: In our prospective observational study, 50 patients had CAD and 30 had normal coronary arteries. Endothelial function was evaluated by endothelium-dependent flow-mediated dilatation (FMD) and nitroglycerine-mediated dilatation (NMD) measurements. CIMT and Serum TFPI levels were also measured., Results: TFPI was a statistically significant determinant between the two groups with an increased level in CAD (+) group (84.9 ± 19.3 vs 70.2 ± 14.7, p = 0.001). There was a positive correlation between CIMT and Gensini (r = 0.34, p = 0.014). There was a strong negative correlation between Gensini and FMD-NMD, statistically significant (FMD: r = -0.715, p < 0.001; NMD: r = -0.718, p < 0.001)., Conclusion: We observed that ED, increased CIMT and TFPI levels were associated with CAD. Additionally, increased CIMT measurements and decreased FMD and NMD values had a positive correlation with GSS (Tab. 4, Fig. 6, Ref. 50).
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- 2018
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29. Takayasu Arteritis with Multiple Coronary Artery Fistulas to Bronchial Arteries.
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Karabay KO, Altuntas E, Uysal E, Ozkara A, and Aytekin V
- Abstract
Takayasu arteritis (TA) is an inflammatory disease that commonly occurs in young females. Coronary involvement occurs rarely and mostly with stenosis. Here, we present a case of TA associated with fistulas between the coronary arteries and the bronchial arteries.
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- 2016
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30. Anomalous origin of the left main coronary artery from the right coronary artery with a preaortic course.
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Yildiz O, Karabay KO, Akman C, and Aytekin V
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- Coronary Angiography, Female, Humans, Middle Aged, Coronary Vessel Anomalies diagnostic imaging
- Abstract
We report the case of a 51-year-old woman who presented with stable angina pectoris and Canadian Cardiovascular Society class II functional capacity. An electrocardiogram during a treadmill exercise test showed substantial ST-segment depression in the inferolateral leads. Coronary angiograms revealed an anomalous origin of the left main coronary artery from the opposite sinus of Valsalva and an interarterial course between the ascending aorta and pulmonary artery. Although this phenomenon is dangerous, the patient refused further examination. We discuss the diagnosis and treatment of patients who have an anomalous origin of a coronary artery from the opposite sinus of Valsalva.
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- 2015
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31. Concomitant anterior and inferior myocardial infarctions.
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Karabay KO, Yildiz A, Behramoglu F, and Aytekin V
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Acute multicoronary occlusion is an extremely rare clinical and angiographic finding. Prompt diagnosis and treatment are extremely important. Herein, we present a 38-year-old man suffering from concomitant anterior and inferior myocardial infarctions due to simultaneous total occlusion of both the left anterior descending and right coronary arteries.
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- 2015
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32. Relationship between endothelial dysfunction and cardiovascular risk factors and the extent and severity of coronary artery disease.
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Kurtoğlu Gümüşel H, Çatakoğlu AB, Yıldırımtürk Ö, Yurdakul S, Helvacıoğlu F, Ziyrek M, Hanavdeloğulları R, Aytekin V, and Aytekin S
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- Blood Flow Velocity drug effects, Brachial Artery physiopathology, Female, Humans, Male, Middle Aged, Nitroglycerin pharmacology, Regional Blood Flow, Risk Factors, Sensitivity and Specificity, Severity of Illness Index, Ultrasonography, Doppler, Duplex, Vasodilation drug effects, Vasodilator Agents pharmacology, Coronary Artery Disease physiopathology, Endothelium, Vascular physiopathology
- Abstract
Objectives: Endothelial dysfunction (ED) is associated with coronary artery disease (CAD) and cardiovascular risk factors. The relationship between cardiovascular risk factors, ED and the presence, extent and severity of CAD, was evaluated in patients with and without angiographically defined CAD in our study., Study Design: Eighty patients with CAD and 20 subjects with normal coronary arteries were included. Endothelial function was evaluated by endothelium-dependent, flow-mediated dilatation (FMD) and nitroglycerine-mediated dilatation (NMD) measurements, using brachial artery Doppler ultrasonography (USG). Cardiovascular risk factors were identified. The extent and severity of CAD was determined via vessel and modified Gensini scores., Results: FMD% and NMD% were significantly decreased in the CAD(+) group compared with the CAD(-) group (p=0.0001). In the CAD(+) group, the cut-off values of FMD% and NMD% in distinguishing between single-vessel and multi-vessel diseases were 8.5% (sensitivity: 95%, specificity: 62%) and 13.6% (sensitivity: 91%, specificity: 62%), respectively. Additionally, a modified Gensini score was significantly correlated with both FMD and NMD (r=-0.825, r=-0.778, respectively; p=0.0001) in the CAD(+) group., Conclusion: ED was more prevalent in the CAD(+) group, and the degree of ED correlated well with the extent and severity of CAD.
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- 2014
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33. Multiple coronary thrombi with cisplatin.
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Karabay KO, Yildiz O, and Aytekin V
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- Adult, Antineoplastic Combined Chemotherapy Protocols, Bleomycin therapeutic use, Cisplatin therapeutic use, Combined Modality Therapy, Coronary Thrombosis therapy, Etoposide therapeutic use, Humans, Male, Percutaneous Coronary Intervention, Stents, Tirofiban, Treatment Outcome, Tyrosine analogs & derivatives, Tyrosine therapeutic use, Cisplatin adverse effects, Coronary Thrombosis chemically induced, Coronary Thrombosis diagnosis, Teratoma drug therapy, Testicular Neoplasms drug therapy
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Testicular cancer is the most common malignancy in young men (15-29 years old). Combination therapy with bleomycin, etoposide, and cisplatin has been the standard first-line treatment for testicular metastatic disease. We present a case of multicoronary thrombi causing acute inferior myocardial infarction in a patient who recently received chemotherapy for testicular tumor.
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- 2014
34. Success in chronic total occlusion: "benefit for the patient" or "satisfaction for the operator"?
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Aytekin V
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- Coronary Occlusion pathology, Humans, Percutaneous Coronary Intervention economics, Practice Guidelines as Topic, Treatment Outcome, Attitude of Health Personnel, Coronary Occlusion surgery, Patient Satisfaction, Percutaneous Coronary Intervention methods
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- 2013
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35. A new stenting technique for bifurcation lesions a nine-patient case series.
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Karabay KO, Bagirtan B, and Aytekin V
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- Adult, Aged, Angioplasty, Balloon, Coronary adverse effects, Angioplasty, Balloon, Coronary mortality, Coronary Angiography, Coronary Artery Bypass, Coronary Artery Disease diagnostic imaging, Coronary Artery Disease mortality, Female, Humans, Male, Middle Aged, Myocardial Infarction etiology, Retrospective Studies, Time Factors, Treatment Outcome, Turkey, Angioplasty, Balloon, Coronary instrumentation, Angioplasty, Balloon, Coronary methods, Coronary Artery Disease therapy, Stents
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Aims: This study describes and reports preliminary outcomes using kissing T-stenting and small protrusion (K-TAP), a novel modification of traditional T-stenting and small protrusion (TAP)., Methods and Results: Nine patients who were treated with K-TAP between May 2008 and February 2012 at two hospitals were retrospectively included in this study. The primary endpoints were angiographic success, procedural success, and the composite 30-day and long-term occurrences of major adverse cardiac events (MACEs), which consisted of death, coronary artery bypass graft surgery, repeated percutaneous coronary intervention of the target vessel, and non-Q-wave and Q-wave myocardial infarctions. Data were obtained from the review of institutional databases, folder auditing, a telephone survey of the patients, and the review of angiograms. Angiographic success and procedural success were achieved in all patients. The mean fluoroscopy time for the total procedure was 24.1 min (range 20-28). No complications occurred during the procedures. The MACE rate during the mean follow-up period of 102 weeks (range 22-196 weeks) was 0%., Conclusions: K-TAP, a new coronary bifurcation stenting method, has favorable angiographic and procedural success rates and a low early post-procedure MACE rate. Further studies are needed to evaluate the clinical efficacy of the K-TAP method., (© 2013 Wiley Periodicals, Inc.)
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- 2013
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36. Recurrent left ventricular apical ballooning syndrome in a patient with pheochromocytoma.
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Celebi H, Erdim R, Karabay KO, Yildirimturk O, and Aytekin V
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Transient left ventricular apical ballooning syndrome is characterized by reversible left ventricular wall motion abnormalities, chest pain or dyspnea, ST-segment elevation, and mild elevation of cardiac enzyme levels in the absence of obstructive coronary artery disease. The pathophysiology of the syndrome is still unknown. The probable mechanism is supposed to be a catecholamine discharge. We report the case of a 66-year-old woman with recently diagnosed pheochromocytoma who presented with chest pain and ST-segment elevation. Coronary angiography revealed normal coronaries and apical dyskinesia at ventriculography. A similar episode of chest pain occurred 4 years ago with same angiographic findings and reversible inferobasal akinesia. In-hospital course was uneventful and the patient was discharged from the hospital 4 days later with treatment of aspirin 1 × 100 mg, metoprolol 1 × 50 mg, lisinopril 1 × 10 mg, and atorvastatin 1 × 20 mg. At 2 years follow-up after the event, the patient remained asymptomatic.
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- 2012
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37. Two-Year Follow-up of Sirolimus-Eluting Stents versus Paclitaxel-Eluting Stents in Acute Myocardial Infarction.
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Erdim R, Helvacioglu F, Gormez S, Karabay KO, and Aytekin V
- Abstract
It has been shown that drug-eluting stents (DESs) significantly reduce restenosis rate when compared with bare-metal stents in a broad range of patients with coronary artery disease. However, current data are limited about the efficacy of different DESs in treatment of ST segment elevation myocardial infarction (STEMI). The aim of this study was to compare the effectiveness and safety of sirolimus-eluting stents (SESs) with paclitaxel-eluting stents (PESs) in primary percutaneous coronary intervention. We retrospectively examined 127 STEMI patients who underwent primary percutaneous coronary intervention. PES group consisted of 79 patients and SES group consisted of 48 patients. Patients were analyzed for major adverse cardiac events (MACE) and stent thrombosis (ST). The mean follow-up period was 2 years. The mean age was 53 ± 11 years in the SES group and 59 ± 11 years in the PES group (p = 0.03). Baseline and procedural characteristics were similar in the two groups except stent lengths, which was longer in the SES group. Two-year MACE rates were 8.3% in the SES group and 16.4% in the PES group (p = 0.28). Rates for ST for SES and PES groups were as follows: early ST was 2.08 versus 2.53%; late ST was 2.08 versus 2.53%; and very late ST was 2.08 versus 2.53% (p > 0.05). There were no statistically significant differences in MACE and ST rates between the SES and PES groups in the 2-year follow-up period. High ST rates detected in our study need to be clarified with future prospective and randomized clinical trials.
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- 2012
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38. Transcatheter aortic valve implantation: a novel perspective by real-time three-dimensional transesophageal echocardiography.
- Author
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Aytekin S, Tayyareci Y, Erdim R, Catakoğlu AB, Akpınar B, and Aytekin V
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- Aged, 80 and over, Cardiac Catheterization methods, Echocardiography, Three-Dimensional methods, Echocardiography, Transesophageal methods, Female, Heart Valve Prosthesis Implantation methods, Humans, Aortic Valve Stenosis diagnostic imaging, Aortic Valve Stenosis surgery
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- 2011
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39. Progressive subclinical left ventricular systolic dysfunction in severe aortic regurgitation patients with normal ejection fraction: a 24 months follow-up velocity vector imaging study.
- Author
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Yurdakul S, Tayyareci Y, Yildirimturk O, Behramoglu F, Colakoglu Z, Memic K, Aytekin V, and Aytekin S
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- Aortic Valve Insufficiency complications, Aortic Valve Insufficiency physiopathology, Blood Pressure, Disease Progression, Female, Heart physiopathology, Heart Rate, Humans, Male, Middle Aged, Systole, Ventricular Dysfunction, Left physiopathology, Aortic Valve Insufficiency diagnostic imaging, Echocardiography, Stroke Volume, Ventricular Dysfunction, Left diagnostic imaging
- Abstract
Objectives: We aimed to evaluate long-term changes in left ventricular (LV) longitudinal systolic functions in patients with asymptomatic, severe aortic regurgitation (AR) by using novel 2D strain imaging., Methods and Results: Thirty severe AR patients with normal ejection fraction (EF) and 30 healthy controls were evaluated by both conventional echocardiography and velocity vector maging (VVI) based strain imaging at baseline and 24 months follow-up. To evaluate LV longitudinal systolic function, segmental peak systolic strain and strain rate (SRs) data were acquired from apical four-chamber, two-chamber and long-axis views. Longitudinal peak systolic strain and SRs of the LV were decreased in patients with severe AR compared to controls at baseline (P = 0.0001). The impairment was more significant in 24 months follow-up (P = 0.0001 for strain, P = 0.01 for SRs). Longitudinal peak systolic strain was significantly correlated with left ventricular end-diastolic (LVEDD; r =-0.42, P = 0.0001) and left ventricular end-systolic diameter (LVESD) (r =-0.41, P = 0.0001) There was also a strong negative correlation between LV SRs and LVEDD (r =-0.50, P = 0.0001), and LVESD (r =-0.39, P = 0.0001)., Conclusions: VVI-derived strain and SRs may be used as adjunctive, noninvasive parameters in the assessment of subclinical LV dysfunction and its progress during clinical follow-up, in patients with severe AR., (© 2011, Wiley Periodicals, Inc.)
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- 2011
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40. Subclinical left ventricular dysfunction in asymptomatic chronic mitral regurgitation patients with normal ejection fraction: a combined tissue Doppler and velocity vector imaging-based study.
- Author
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Yurdakul S, Tayyareci Y, Yildirimturk O, Memic K, Aytekin V, and Aytekin S
- Subjects
- Female, Humans, Male, Middle Aged, Mitral Valve Insufficiency physiopathology, Stroke Volume, Ventricular Dysfunction, Left complications, Ventricular Dysfunction, Left physiopathology, Echocardiography methods, Mitral Valve Insufficiency diagnostic imaging, Ventricular Dysfunction, Left diagnostic imaging
- Abstract
Background: The optimal timing of the surgery in asymptomatic severe mitral regurgitation (MR) remains a challenge. The aim of the study is to evaluate the subclinical changes in LV longitudinal functions by using a novel strain imaging technique; velocity vector imaging (VVI); in patients with chronic MR., Methods and Results: We studied 54 patients with asymptomatic, nonischemic, chronic MR (56.8 ± 9 years and 56% male) and 30 healthy controls (55 ± 6.5 years and 55% male) with normal ejection fraction. Patients with MR were analyzed in tertiles according to their regurgitant volumes (RV) and regurgitant fractions (RF): mild MR (RV < 30 mL, RF < 30% n = 7), moderate MR (RV: 30-59 mL, RF = 30-50%; n = 29), and severe MR (RV > 60 mL, RF ≥ 50%; n = 18). Conventional echocardiography and VVI-based strain imaging were performed to analyze LV functions. LV longitudinal peak systolic strain and strain rate (SRs) were significantly impaired in moderate and severe MR patients. Changes in LV longitudinal deformation were more significant in patients with severe MR. All deformation parameters showed a marked negative correlation with RV (LV Strain r =-0.583, P = 0.0001; LV SR r =-0.408, P = 0.002, respectively)., Conclusions: LV long-axis functions are important markers of LV contractility in MR patients. Novel echocardiographic techniques may provide additional data on subclinical changes in the LV and give way to the optimal timing for the surgery in severe MR patients., (© 2011, Wiley Periodicals, Inc.)
- Published
- 2011
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41. Assessment of right atrial pressure using echocardiography and correlation with catheterization.
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Yildirimturk O, Tayyareci Y, Erdim R, Ozen E, Yurdakul S, Aytekin V, Demiroglu IC, and Aytekin S
- Subjects
- Adult, Aged, Aged, 80 and over, Blood Pressure, Female, Humans, Male, Middle Aged, Mitral Valve Stenosis diagnostic imaging, Mitral Valve Stenosis pathology, Mitral Valve Stenosis surgery, Organ Size, Vena Cava, Inferior pathology, Atrial Function, Catheterization, Echocardiography, Rheumatic Heart Disease diagnostic imaging, Rheumatic Heart Disease pathology, Rheumatic Heart Disease surgery, Vena Cava, Inferior diagnostic imaging
- Abstract
Purpose: Right ventricular systolic pressure is crucial for both treatment and prognosis of cardiovascular and pulmonary diseases. The proper measurement of right ventricular systolic pressure depends on an accurate estimation of right atrial pressure (RAP). There is no standard method for estimating RAP noninvasively. The purpose of this study was to compare different noninvasive methods, namely, inferior vena cava (IVC) size and inspiratory collapse, tissue Doppler derived E/E' (TV E/E') for estimating RAP, and their correlation with catheter-based measurements in patients with mitral valve stenosis with atrial fibrillation (AF) or normal sinus rhythm (NSR)., Methods: The study group consisted of 39 patients (13 men, mean age 58.9 ± 11.8 years) with rheumatic mitral valve stenosis. We performed cardiac catheterization and transthoracic echocardiography on all patients., Results: Mean RAP measured by catheterization was 9.7 ± 3.8 mmHg. No correlation was found between RAP and TV E/E' ratio, but there was a significant correlation between RAP and IVC diameter (r = 0.51, p < 0.05). Seventeen patients (43.6%) were in AF and 22 patients (56.4%) were in NSR. There was no correlation between TV E/E' ratio and RAP in patients with AF and in patients with NSR. RAP was correlated with collapsibility index in patients with AF (r = 0.56, p < 0.05). RAP was significantly correlated with IVC diameter (r = 0.62, p < 0.005) and collapsibility index (r = 0.49, p < 0.05) in patients with NSR., Conclusions: The combination of IVC diameter and collapsibility index is a simple a semiquantitative approach that might provide a better estimation of RAP., (Copyright © 2011 Wiley Periodicals, Inc.)
- Published
- 2011
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42. Left ventricular pseudoaneurysm complicating inferior myocardial infarction: a case report.
- Author
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Erdim R, Yildirimturk O, Polat B, Aytekin S, Demiroglu C, and Aytekin V
- Abstract
Acquired pseudoaneurysm of the left ventricle is a very rare disorder and mostly occurs after large transmural myocardial infarction (MI) with peak creatine phosphokinase-MB levels greater than 150 IU/mL. Patients developing left ventricular (LV) pseudoaneurysm usually present with angina or heart failure symptoms. Although different imaging modalities exist, coronary angiography is the gold standard for diagnosis. Surgery is the treatment of choice for LV pseudoaneurysms detected in the first months after MI. Here we report the case of a 74-year-old woman who presented with a relatively small inferior MI due to right coronary artery occlusion and complicated by LV pseudoaneurysm.
- Published
- 2011
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43. Coexistence of left main and right coronary artery ostial stenosis: demographic and angiographic features.
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Yildirimturk O, Cansel M, Erdim R, Ozen E, Demiroglu IC, and Aytekin V
- Abstract
This study was designed to evaluate ostial left main coronary artery (LMCA) stenosis and investigate concomitant stenotic lesions of LMCA and right coronary arteries (RCA) and their demographic and angiographic features. We evaluated 11,283 patients who underwent coronary angiography. Patients were placed into four groups according to having ostial or nonostial LMCA or RCA stenosis. Significant LMCA stenosis was observed in 242 (8.3%) of the patients, and only 68 (28.1%) of them had significant ostial LMCA stenosis. There was a significant correlation between ostial stenosis of LMCA and RCA (p = 0.03). The frequency of female gender was greater in ostial LMCA and ostial RCA stenosis groups compared with the other groups (p = 0.01). Ostial LMCA and RCA stenosis were related significantly. Both female predominance and coexistence of ostial LMCA and RCA stenosis might have suggest a different pathological ground for this disease.
- Published
- 2011
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44. [Evaluation of left ventricular regional systolic functions in patients with coronary artery disease by two-dimensional strain imaging: a velocity vector imaging study].
- Author
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Tayyareci Y, Yıldırımtürk O, Yurdakul S, Aytekin V, Demiroğlu IC, and Aytekin S
- Subjects
- Coronary Artery Disease complications, Coronary Artery Disease diagnostic imaging, Female, Humans, Male, Middle Aged, Myocardial Infarction complications, Myocardial Infarction diagnostic imaging, Vectorcardiography, Coronary Artery Disease physiopathology, Echocardiography methods, Myocardial Infarction physiopathology, Ventricular Function, Left
- Abstract
Objectives: The aim of the study was to assess left ventricular (LV) regional systolic functions in coronary artery disease (CAD) using a novel strain imaging method, namely, velocity vector imaging (VVI)., Study Design: The study included 69 patients (51 men, 18 women; mean age 52.9±10.3 years) with CAD and 30 healthy volunteers (22 men, 8 women; mean age 58.1±13.8 years). Thirty-three patients had previous myocardial infarction (MI). In all the patients, LV wall motions were analyzed as akinetic, hypokinetic, or normokinetic using the 16-segment model of the American Heart Association. In addition, LV peak systolic strain, strain rate (SRs), and segmental ejection fraction (SEF) of all the segments were calculated by using VVI., Results: Patients with MI had significantly lower mean peak systolic strain, SRs, and SEF compared to patients without MI and controls (p=0.0001). The presence of multivessel disease was accompanied by significantly decreased peak systolic strain (p=0.04), SRs (p=0.02), and SEF (p=0.0001). Myocardial segments affected by subtotal/total occlusion (≥99%) had lower peak systolic strain (p=0.02), SRs (p=0.001), and SEF (p=0.0001) values compared to segments with less severe occlusion. In segmental analysis, longitudinal deformation was most significant in akinetic segments (p=0.0001), but hypokinetic and normokinetic segments also differed significantly with respect to deformation (for strain, p=0.01; for SRs and SEF, p=0.0001). Moreover, deformation in the normokinetic segments was more significant than normal segments of the controls (for strain, p=0.02; for SRs and SEF, p=0.0001)., Conclusion: Velocity vector imaging allows regional deformation analysis for quantitative assessment of regional LV systolic functions; this technique may be more reliable than conventional echocardiography in determining wall motion abnormalities.
- Published
- 2011
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45. Preoperative left atrial mechanical dysfunction predicts postoperative atrial fibrillation after coronary artery bypass graft operation – a velocity vector imaging-based study –.
- Author
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Tayyareci Y, Yildirimtürk O, Aytekin V, Memic K, Behramoglu F, Demiroglu IC, and Aytekin S
- Subjects
- Aged, Atrial Function, Left, Echocardiography methods, Female, Humans, Male, Middle Aged, Postoperative Period, Predictive Value of Tests, Prospective Studies, Atrial Fibrillation etiology, Coronary Artery Bypass adverse effects, Heart Atria diagnostic imaging, Heart Atria physiopathology
- Abstract
Background: The aim of the present study was to evaluate pre-existent subclinical mechanical atrial dysfunction in patients with postoperative atrial fibrillation (POAF) by using novel echocardiographic techniques., Methods and Results: Ninety-six patients with sinus rhythm, undergoing coronary artery bypass graft (CABG) operation were prospectively enrolled. Preoperative left atrial (LA) reservoir, conduit and booster functions were evaluated by 3 different methods: conventional echocardiography, tissue Doppler imaging (TDI), and 2-dimensional strain imaging based-velocity vector imaging (VVI). POAF occurred in 25 out of 96 patients (26%). LA volume index (LAVI) was the only conventional parameter associated with POAF. TDI-derived LA velocities were similar in study groups. In VVI analysis, LA systolic strain, strain rate (SRs) and early diastolic strain rate (ESRd) were impaired in patients who developed POAF after CABG (P=0.0001). Age, LAVI, LA peak systolic strain, SRs and ESRd were found to be the independent predictors of POAF. The optimal cut-off point of 44.0% (88.7% sensitivity, 96% specificity) for LA strain, 1.7 s(-1) (88% sensitivity, 86.2% specificity) for SRs and 1.95 s(-1) (sensitivity 72%, 70.4% specificity) for ESRd predicted POAF in this study., Conclusions: VVI-derived strain imaging could be used as an adjunctive non-invasive method for evaluating subclinical atrial mechanical dysfunction in patients undergoing CABG. This might help us to identify patients with high risk of POAF in clinical practice.
- Published
- 2010
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46. Comparison of intracoronary versus intravenous administration of tirofiban in primary percutaneous coronary intervention.
- Author
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Erdim R, Erciyes D, Görmez S, Karabay KO, Catakoğlu AB, Aytekin V, Demiroğlu C, and Gülbaran M
- Subjects
- Adult, Aged, Angioplasty, Balloon, Coronary methods, Creatine Kinase blood, Fibrinolytic Agents administration & dosage, Fibrinolytic Agents adverse effects, Follow-Up Studies, Humans, Injections, Intravenous, Middle Aged, Myocardial Infarction blood, Myocardial Infarction physiopathology, Retrospective Studies, Stroke Volume, Tirofiban, Treatment Outcome, Tyrosine administration & dosage, Tyrosine adverse effects, Tyrosine therapeutic use, Fibrinolytic Agents therapeutic use, Myocardial Infarction therapy, Tyrosine analogs & derivatives
- Abstract
Objective: The purpose of this study was to compare the intravenous bolus dose of tirofiban with intracoronary bolus dose in primary percutaneous coronary intervention (PCI) with regard to in hospital and six months clinical outcomes and peak cardiac enzyme levels., Methods: We retrospectively examined 84 ST elevation myocardial infarction (STEMI) patients who underwent primary PCI from March 2006 to February 2007. All patients received the systemic bolus dose of tirofiban 10 mcg/kg either via intracoronary (IC) or intravenous (IV) route, followed by a 36 hours of IV infusion at 0.15 mcg/kg/min. Thirty six patients in IC group were compared with 48 patients in IV group in terms of peak cardiac enzyme levels, in-hospital and six months major adverse cardiac events (MACE) rates (death, myocardial infarction and repeat revascularization). Fisher's exact test, Yates Chi-square, unpaired Student's t-test and Mann-Whitney U test were used for statistical analysis., Results: There was no difference in cardiovascular risk profile or cardiac history between two groups. At six months the incidence of MACE was 6.25% in IV group and 11.1% in IC group (p=0.45). Peak cardiac phosphokinase (CPK) levels between IV and IC groups were also statistically non significant (2657+/-2181 U/L in IV group and 2529+/-1929 U/L in IC group) (p=0.92)., Conclusion: Intracoronary bolus application of tirofiban was not associated with reduction in MACE rates compared to intravenous administration in patients with STEMI who underwent primary PCI. Future prospective trials with higher bolus doses of IC tirofiban should addressed to clarify this issue.
- Published
- 2010
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47. Subclinical left ventricular dysfunction in asymptomatic severe aortic regurgitation patients with normal ejection fraction: a combined tissue Doppler and velocity vector imaging study.
- Author
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Tayyareci Y, Yildirimturk O, Aytekin V, Demiroglu IC, and Aytekin S
- Subjects
- Aortic Valve Insufficiency physiopathology, Echocardiography, Doppler, Pulsed, Female, Humans, Male, Middle Aged, Reference Standards, Aortic Valve Insufficiency diagnostic imaging, Ventricular Dysfunction, Left diagnostic imaging
- Abstract
Objectives: Our aim was to evaluate subclinical left ventricular (LV) dysfunction, by two novel echocardiographic techniques, velocity vector imaging (VVI)-derived strain imaging and tissue Doppler imaging (TDI), in patients with asymptomatic, severe aortic regurgitation (AR)., Methods: Forty patients with severe AR with normal ejection fraction and 30 controls were included to the study. All patients underwent a standard echocardiography extended with TDI and VVI analyses. To evaluate the LV longitudinal and circumferential deformation, segmental systolic peak strain and strain rate (SRs) data were acquired from parasternal short axis, apical four-chamber, two-chamber, and long axis views, and additionally LV myocardial velocities, isovolumic myocardial acceleration (IVA), peak systolic velocity (Sa) and peak myocardial velocity during isovolumic contraction (IVV) assessed by TDI., Results: IVA was the only TDI-derived parameter which was significantly impaired in AR patients (P = 0.0001). Both longitudinal and circumferential strain and SRs of the LV were significantly decreased in patients with severe AR (P = 0.0001). Longitudinal and circumferential strain/SRs and TDI-derived LV IVA were inversely correlated with LV end-diastolic diameter (P = 0.0001) and end-systolic diameter (P = 0.0001). TDI-derived IVA was also very well correlated with longitudinal deformation parameters (P = 0.0001)., Conclusions: VVI- derived strain imaging and TDI-derived IVA may be used as adjunctive, reliable, noninvasive parameters for evaluating subclinical ventricular dysfunction in patients with chronic, severe AR. This may help to identify patients for closer follow-up and to determine the need for surgery before developing irreversible, severe heart failure.
- Published
- 2010
- Full Text
- View/download PDF
48. The Highway Technique: a new stenting technique to treat coronary bifurcation lesions.
- Author
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Catakoglu AB and Aytekin V
- Subjects
- Adult, Aged, Angioplasty, Balloon, Coronary adverse effects, Coronary Angiography, Coronary Artery Disease diagnostic imaging, Female, Humans, Male, Middle Aged, Time Factors, Treatment Outcome, Ultrasonography, Interventional, Angioplasty, Balloon, Coronary instrumentation, Angioplasty, Balloon, Coronary methods, Coronary Artery Disease therapy, Stents
- Abstract
Aims: We report a new stenting technique which was employed in 12 patients to treat coronary bifurcation lesions., Methods and Results: A stent is positioned in the main vessel together with a balloon in the side branch, which is positioned slightly proximal to the main vessel stent that also has enough length to cover the side branch ostium. Both the stent in the main vessel and the balloon in the side branch are inflated simultaneously. Following deflation, a double lumen is created in the main vessel, proximal to the bifurcation. The stent balloon is removed with the side branch balloon left deflated in its initial position. The main vessel is rewired with a third guidewire. The side branch balloon and guidewire are removed. The initial guidewire in the main vessel is directed to the side branch. A balloon is advanced and inflated in the side branch to dilate the struts of the main vessel stent that will provide the side branch entrance. The side branch balloon is left in place. A size matched balloon is advanced on the third guidewire that was advanced in the main vessel and inflated inside the stent with high pressure. Finally, kissing balloon inflation is performed at the bifurcation. Provisional stenting of the side branch can be performed when necessary. Final kissing balloon inflation is recommended after stenting of the side branch., Conclusions: As a new coronary bifurcation stenting method, the Highway Technique has some advantages in side branch protection, with favourable immediate and 30-day clinical outcomes.
- Published
- 2010
- Full Text
- View/download PDF
49. Response to the Letter to the Editor: "The correct number of double right coronary artery reported in the literature".
- Author
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Karabay KO, Catakoglu AB, Demiroglu IC, and Aytekin V
- Subjects
- Coronary Vessel Anomalies therapy, Coronary Vessels pathology, Humans, Publications standards, Rare Diseases diagnosis, Rare Diseases therapy, Coronary Vessel Anomalies diagnosis
- Published
- 2009
- Full Text
- View/download PDF
50. Aneurysm of the membranous septum detected during left ventriculography and demonstrated by cardiac magnetic resonance imaging.
- Author
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Catakoglu AB, Aytekin V, Aytekin S, Duran C, Polat B, and Demiroglu C
- Subjects
- Heart Septum diagnostic imaging, Heart Septum pathology, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Radiography, Radionuclide Ventriculography, Heart Aneurysm diagnostic imaging, Heart Aneurysm pathology, Heart Septal Defects, Ventricular diagnostic imaging, Heart Septal Defects, Ventricular pathology
- Published
- 2009
- Full Text
- View/download PDF
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