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1. Perioperative Hypothermia (33°C) Does Not Increase the Occurrence of Cardiovascular Events in Patients Undergoing Cerebral Aneurysm Surgery

Author

D. Chartrand, Michael Beven, C. Salem, W. Burnett, S. Jackson, G. Downey, Michael T. Lawton, S. Lownie, R. Tack, E. Dy, Tord D. Alden, David R. McIlroy, Lis Evered, K. Lukitto, L. Kirby, Thomas A. Moore, R. Popovic, N. Robertson, Patrick W. Hitchon, A. Ashtari, R. Elbe, N. F. Kassell, D. Dulli, A. Wyss, G. Ghazali, S. Rice, Gavin W. Britz, P. Bennett, Karen B. Domino, A. Shahen, D. Dehring, Robert Greif, Argye E. Hillis, L. Meng, D. Fishback, Fred Gentili, Mark Buckland, B. Schaefer, H. Madder, C. Weasler, Anish Bhardwaj, E. Thomson, Ramez W. Kirollos, Basil F. Matta, Kevin H. Siu, H. Machlin, W. Pfisterer, A. Freymuth, N. Badner, R. Wilson, R. Grauer, Zhiyi Zuo, A. McAllister, Z. Sha, A. Rushton, D. Hill, William T. Clarke, L. Jensen, G. Heard, L. Clark, D. Chatfield, J. Haartsen, Jing Wang, S. Nobles, Renee Testa, P. D'Urso, Hossam El-Beheiry, David J. Stone, James C. Torner, Michael J. Souter, A. Meyer, Marek A. Mirski, Marlan R. Hansen, W. Jenkins, L. Pobereskin, J. Walkes, M. Quigley, R. Struthers, James H McMahon, Howard A. Riina, Behnam Badie, P. Heppner, Simon Jones, R. Silbergleit, Thomas N. Pajewski, T. Broderick, Katherine Harris, P. Smythe, N. Duggal, J. Quaedackers, J. Mason, P. E. Bickler, P. McNeill, V. Roelfsema, I. Gibmeier, C. Chambers, H. Gramke, D. Campbell, T. Novick, O. Moise, J. Woletz, Lorri A. Lee, H. Van Aken, Adrian W. Gelb, A. Kane, B. Rapf, Martin S. Angst, S. Shaikh, D. Sirhan, C. Miller, B. Hodkinson, D. Leggett, F. Johnson, Harry J. M. Lemmens, M. Langley, Y. Young, Jeffrey V. Rosenfeld, C. Moy, W. Hamm, C. Hall, G. Henry, R. Burnstein, Lisa Hannegan, A. Buchmann, R. Schatzer, Bruce P. Hermann, John E. McGillicuddy, Bruno Giordani, John C. VanGilder, Keith H. Berge, D. Sage, L. Sternau, N. Page, Marc R. Mayberg, B Thompson, T. Hartman, Laurel E. Moore, S. Bhatia, Richard A. Jaffe, G. Seever, D. Cowie, Jonathan G. Zaroff, C. Duffy, Deborah A. Rusy, Elana Farace, H R Winn, Paul H. Ting, R. Spinka, J. Marler, Patricia H. Petrozza, S. Harding, Lauren C. Berkow, E. Cunningham, D. Bisnaire, D. Wilhite, P. Blanton, S. Laurent, O. Odukoya, Issam A. Awad, P. Chery, C. Lind, B. Bauer, D. Lindholm, K. Kieburtz, J. Ormrod, Michael P. Murphy, Timothy G. Short, Y. Painchaud, R. Peters, Peter C. Whitfield, D. Bain, B. Hindman, A. Shelton, A. Morris, D. Milovan, L. Salvia, William L. Young, S. Wallace, W. Lilley, H. Yi, R. Chelliah, David W. Newell, R. Deam, John Laidlaw, P. Mak, J. Woelfer, K. Graves, Peter M. C. Wright, D. Van Alstine, M. Hemstreet, Phillip A. Scott, Steven D. Chang, S. Poustie, M. Clausen, I. Herrick, Daniel H. Kim, Vladimir Zelman, John L.D. Atkinson, Marcel E. Durieux, Alessandro Olivi, G. Smith, James R. Munis, F. Vasarhelyi, S. Olson, C. Greiner, C. Hoenemann, G. Kleinpeter, J. Kish, Daniel K. Resnick, J. Lang, Dhanesh K. Gupta, E. Knosp, N. Monteiro de Oliveira, D. Moskopp, Carin A. Hagberg, J. Howell, Klaus Hahnenkamp, Gregory M. Davis, T. Phan, Paul S. Myles, C. Beven, F. Salevsky, Maria Matuszczak, E. Mee, David L. Bogdonoff, P. Berklayd, J. Freyhoff, P. Tanzi, A. Law, Barbara A. Dodson, Z. Thayer, R. Govindaraj, Alex Konstantatos, Ralph F. Frankowski, Pirjo H. Manninen, David G. Piepgras, K. Willmann, E. Babayan, Donald S. Prough, Leslie C. Jameson, John A. Wilson, Mary Pat McAndrews, M. Abou-Madi, Steven S. Glazier, Vincent C. Traynelis, Derek A. Taggard, Fredric B. Meyer, C. Bradfield, Hoang P. Nguyen, Mary L. Marcellus, J. Ogden, M. Maleki, M. Lotto, Michael A. Olympio, C. Merhaut, D. Nye, K. Webb, Richard Leblanc, Nichol McBee, William L. Lanier, A. Molnar, Peter J. Lennarson, S. Wadanamby, H. Hulbert, Christopher R. Turner, H. Fraley, Kevin K. Tremper, Sesto Cairo, J. Shafer, J. Krugh, D. Blair, L. Coghlan, P. Schmid, K. O'Brien, K. Littlewood, T. Anderson, R. Eliazo, S. Wirtz, Carol B. Applebury, Jennifer O. Hunt, S. Hickenbottom, Hendrik Freise, Gary D. Steinberg, M. Woodfield, Robert J. Dempsey, Kirk J. Hogan, M. Harrison, H. Stanko, Teresa Bell-Stephens, N. Merah, T. Blount, J. Sanders, J. Biddulph, Tsutomu Sasaki, F. Mensink, P. Balestrieri, Lisa D. Ravdin, H. Lohmann, M. Todd, James Gebel, Lawrence Litt, Christoph Schul, B. White, Bradley J. Hindman, S. Salerno, A. James, D. Manke, Mvon Lewinski, D. Luu, Michael M. Todd, A. Drnda, S. Salsbury, J. Palmisano, L. Connery, Michael Tymianski, E. Tuffiash, Cynthia A. Lien, R. Sawyer, A. Sills, D. Sinclair, J. Bramhall, Ira J. Rampil, David M. Colonna, M. Geraghty, Steven W. Anderson, V. Petty, S. Pai, J. Sheehan, S. Black, K. English, N. Scurrah, Diana G. McGregor, P. Davies, P. Doyle-Pettypiece, H. Bone, Neal J. Naff, M. Lenaerts, James Mitchell, K. Pedersen, Matthew A. Howard, M. Angliss, Daniel Tranel, Bongin Yoo, M. Irons, Emine O. Bayman, C. Skilbeck, Nicholas G. Bircher, Wendy C. Ziai, S. Micallef, Chuanyao Tong, Kathryn Chaloner, Mark T. Wallace, John Moloney, Gavin Fabinyi, P. Sutton, Edward C. Nemergut, Elizabeth Richardson, C. McCleary, M. Graf, Mrinalini Balki, P. Porter, James J. Evans, A. Prabhu, L. Kim, R. Hendrickson, A. Dashfield, V. Portman, Michel T. Torbey, J. Kruger, Donna L. Auer, J. Sorenson, Patricia H. Davis, John A. Walker, M. Mosier, H. Smith, J. Heidler, Andrew Silvers, P. Fogarty-Mack, William F. Chandler, F. Shutway, F. Rasulo, S. Alatakis, Stephen Samples, A. Wray, Henry H. Woo, John A. Ulatowski, Steven L. Giannotta, D. Chandrasekara, J. Sturm, S. Crump, Peter A. Rasmussen, Max R. Trenerry, D. Novy, Wink S. Fisher, N. Quinnine, F. Bardenhagen, M. Angle, W. Ng, G. Ferguson, A. Blackwell, Christopher M. Loftus, James H. Fitzpatrick, David S. Warner, E. Tuerkkan, W. Kutalek, Ferenc E. Gyulai, D. Daly, Helen Fletcher, J. Smith, Mazen A. Maktabi, Howard Yonas, J. Sneyd, M. Menhusen, Johnny E. Brian, K. Smith, R. Watson, T. Weber, D. Greene-Chandos, M. Wichman, Peter Szmuk, J. Birrell, Pekka Talke, J. Jane, L. Atkins, J. Smart, T. Han, B. O'Brien, R. Mattison, Bermans J. Iskandar, J. Ridgley, S. Dalrymple, L. Lindsey, D. Anderson, Julie B. Weeks, M. Felmlee-Devine, P. Deshmukh, D. Ellegala, L. Moss, A. Mathur, F. Lee, F. Sasse, H. Macgregor, R. Peterson, Margaret R. Weglinski, Karen Lane, Daniele Rigamonti, L. Carriere, Mark Wilson, R. Morgan, T. Costello, C. Thien, Arthur M. Lam, H. Bybee, C. Salmond, Robert E. Breeze, Peter Karzmark, Monica S. Vavilala, S. Yantha, Philip E. Stieg, Guy L. Clifton, Kenneth Manzel, D. Papworth, Rafael J. Tamargo, Rosemary A. Craen, Harold P. Adams, B. Radziszewska, Y. Kuo, Satwant K. Samra, B. Frankel, R. Fry, T. Cunningham, M. Mosa, M. McTaggart, F. Steinman, Alex Abou-Chebl, Michael J. Link, Rona G. Giffard, N. Lapointe, C. Meade, Robert F. Bedford, J. Cormack, Robert P. From, J. Reynolds, Paul A. Leonard, K. Quader, N. Subhas, C. Lothaller, S. Ryan, J. Winn, H. Brors, Amin B. Kassam, A. Gelb, J. Zaroff, Gregory M. Malham, A. Redmond, Gordon J. Chelune, J. Findlay, Zeyd Ebrahim, L. Forlano, Mark E. Shaffrey, C. Chase, Peter J. Kirkpatrick, Armin Schubert, L. Koller, Jana E. Jones, P. Li, and B. Chen

Subjects
medicine.medical_specialty, Subarachnoid hemorrhage, Interventional cardiology, business.industry, Vascular disease, Perioperative, Hypothermia, medicine.disease, Preoperative care, Anesthesiology and Pain Medicine, Aneurysm, Anesthesia, Anesthesiology, Medicine, medicine.symptom, business
Abstract

Background Perioperative hypothermia has been reported to increase the occurrence of cardiovascular complications. By increasing the activity of sympathetic nervous system, perioperative hypothermia also has the potential to increase cardiac injury and dysfunction associated with subarachnoid hemorrhage. Methods The Intraoperative Hypothermia for Aneurysm Surgery Trial randomized patients undergoing cerebral aneurysm surgery to intraoperative hypothermia (n = 499, 33.3 degrees +/- 0.8 degrees C) or normothermia (n = 501, 36.7 degrees +/- 0.5 degrees C). Cardiovascular events (hypotension, arrhythmias, vasopressor use, myocardial infarction, and others) were prospectively followed until 3-month follow-up and were compared in hypothermic and normothermic patients. A subset of 62 patients (hypothermia, n = 33; normothermia, n = 29) also had preoperative and postoperative (within 24 h) measurement of cardiac troponin-I and echocardiography to explore the association between perioperative hypothermia and subarachnoid hemorrhage-associated myocardial injury and left ventricular function. Results There was no difference between hypothermic and normothermic patients in the occurrence of any single cardiovascular event or in composite cardiovascular events. There was no difference in mortality (6%) between groups, and there was only a single primary cardiovascular death (normothermia). There was no difference between hypothermic and normothermic patients in postoperative versus preoperative left ventricular regional wall motion or ejection fraction. Compared with preoperative values, hypothermic patients had no postoperative increase in cardiac troponin-I (median change 0.00 microg/l), whereas normothermic patients had a small postoperative increase (median change + 0.01 microg/l, P = 0.038). Conclusion In patients undergoing cerebral aneurysm surgery, perioperative hypothermia was not associated with an increased occurrence of cardiovascular events.

Published
2010

2. No Association between Intraoperative Hypothermia or Supplemental Protective Drug and Neurologic Outcomes in Patients Undergoing Temporary Clipping during Cerebral Aneurysm Surgery

Author

John A. Ulatowski, Steven L. Giannotta, J. Sturm, D. Cowie, D. Novy, N. Quinnine, James H. Fitzpatrick, David S. Warner, Ferenc E. Gyulai, D. Daly, S. Rice, H. Machlin, William T. Clarke, Philip E. Bickler, H. Van Aken, M. Langley, M. von Lewinski, G. Kleinpeter, J. Freyhoff, A. Morris, L. Salvia, Peter M. C. Wright, Wolfgang K. Pfisterer, K. English, M. Lenaerts, Nicholas G. Bircher, Simon Jones, L. Jensen, Issam A. Awad, P. Chery, B. Schaefer, S. Wallace, F. Johnson, H. Smith, J. Biddulph, T. Cunningham, N. Monteirode Oliveira, R. Watson, A. McAllister, D. Moskopp, Patricia H. Petrozza, B. Hindman, A. Shelton, D. Manke, F. Steinman, D. Luu, Alex Abou-Chebl, J. Birrell, M. Irons, J. Ridgley, Gavin Fabinyi, S. Alatakis, Basil F. Matta, James J. Evans, A. Prabhu, Rona G. Giffard, H. Gramke, Hendrik Freise, K. Graves, P. Fogarty-Mack, L. Clark, Wink S. Fisher, K. Smith, Renee Testa, P. D'Urso, A. Freymuth, James C. Torner, M. Wallace, R. Struthers, Howard A. Riina, Z. Thayer, Daniel Tranel, E. Knosp, E. Dy, Tord D. Alden, Henry H. Woo, Bruce P. Hermann, John C. VanGilder, Douglas Campbell, N. Lapointe, Gavin W. Britz, J. Sheehan, C. Meade, M. Balki, C. Bradfield, Alessandro Olivi, P. Doyle-Pettypiece, Robert F. Bedford, F. Bardenhagen, M. Angle, Donald S. Prough, John E. McGillicuddy, A. Drnda, M. Abou-Madi, S. Black, David R. McIlroy, Lis Evered, S. Poustie, J. Cormack, J. Sneyd, M. Menhusen, William L. Lanier, M. Maleki, T. Phan, D. Nye, M. Graf, Michael A. Olympio, N. Robertson, Teresa Bell-Stephens, E. Tuerkkan, N. Merah, S. Olson, L. Kirby, L. Moss, Peter Heppner, Thomas A. Moore, J. Bramhall, H. Madder, Christopher R. Turner, H. Fraley, James Mitchell, K. Pedersen, M. Angliss, Robert P. From, Y. Painchaud, Gary D. Steinberg, J. Woelfer, K. Littlewood, T. Anderson, J. Palmisano, M. Clausen, Paul H. Ting, Lisa D. Ravdin, H. Lohmann, R. Burnstein, R. Popovic, T. Hartman, D. Anderson, Julie B. Weeks, H. Macgregor, Kirk J. Hogan, D. Chatfield, Daniel H. Kim, James R. Munis, J. Lang, J. Reynolds, Michael M. Todd, F. Mensink, L. Pobereskin, J. Walkes, Mary Pat McAndrews, A. Sills, Bongin Yoo, P. Balestrieri, S. Micallef, Mary L. Marcellus, J. Wang, Kathryn Chaloner, Patrick W. Hitchon, Paul A. Leonard, C. McCleary, Lawrence Litt, N. Subhas, Wendy C. Ziai, James H McMahon, V. Petty, P. Smythe, G. Heard, Michael J. Souter, R. Hendrickson, A. Dashfield, V. Portman, Edward C. Nemergut, Patricia H. Davis, W. Burnett, M. Lotto, Y. Young, S. Jackson, J. Quaedackers, S. Ryan, Helen Fletcher, A. Ashtari, N. F. Kassell, Anish Bhardwaj, E. Thomson, Ramez W. Kirollos, Margaret R. Weglinski, Karen Lane, Daniele Rigamonti, J. Winn, Bradley J. Hindman, S. Salerno, L. Kim, R. Sawyer, Peter J. Lennarson, S. Wadanamby, Zhiyi Zuo, William F. Chandler, F. Shutway, P. Bennett, C. Merhaut, D. Hill, J. Haartsen, N. Badner, T. Weber, Rafael J. Tamargo, D. Fishback, Rosemary A. Craen, Michel T. Torbey, O. Odukoya, D. Chartrand, J. Jane, Michael T. Lawton, A. Buchmann, Richard A. Jaffe, P. Berklayd, T. Blount, J. Sanders, J. Marler, L. Meng, R. Grauer, Y. Kuo, O. Moise, P. Tanzi, R. Govindaraj, Alex Konstantatos, D. Greene-Chandos, G. Downey, M. Wichman, D. Chandrasekara, Amin B. Kassam, Max R. Trenerry, R. Elbe, A. Wyss, R. Peterson, D. Sirhan, C. Miller, Marek A. Mirski, Stephen Samples, H. Brors, Michael Beven, M. Woodfield, William L. Young, D. Leggett, A. Wray, Karen B. Domino, Robert Greif, Argye E. Hillis, Gary G. Ferguson, Steven S. Glazier, J. Shafer, J. Krugh, I. Gibmeier, G. Ghazali, W. Ng, R. Tack, R. Schatzer, B. O'Brien, Bermans J. Iskandar, B. Bauer, C. Lind, C. Weasler, Michael Tymianski, E. Tuffiash, W. Hamm, C. Hall, L. Sternau, N. Page, Marc R. Mayberg, B Thompson, Richard Leblanc, A. Shahen, Laurel E. Moore, S. Bhatia, Nichol McBee, P. Davies, James Gebel, Cynthia A. Lien, J. Ormrod, David M. Colonna, D. Dehring, A. Rushton, P. Blanton, C. Lothaller, Diana G. McGregor, S. Harding, Lauren C. Berkow, D. Van Alstine, M. Hemstreet, A. Blackwell, Christopher M. Loftus, Klaus Hahnenkamp, J. Woletz, D. Lindholm, K. Kieburtz, M. Geraghty, Steven W. Anderson, D. Dulli, M. McTaggart, Fred Gentili, Johnny E. Brian, R. Peters, C. Greiner, Marlan R. Hansen, W. Jenkins, T. Broderick, Katherine Harris, B. Radziszewska, Maria Matuszczak, David L. Bogdonoff, K. Quader, Pekka Talke, B. Hodkinson, C. Hoenemann, C. Duffy, Deborah A. Rusy, R. Silbergleit, J. Findlay, Gregory M. Davis, J. Ogden, Adrian W. Gelb, A. Kane, Satwant K. Samra, E. Babayan, S. Dalrymple, Harry J. M. Lemmens, Tsutomu Sasaki, Lisa Hannegan, R. Eliazo, B. Frankel, D. Bisnaire, F. Salevsky, Michael J. Link, Jeffrey V. Rosenfeld, D. Sage, D. Sinclair, Keith H. Berge, D. Wilhite, Steven D. Chang, J. Kish, Carin A. Hagberg, Matthew A. Howard, Elizabeth Richardson, Peter C. Whitfield, D. Bain, Barbara A. Dodson, S. Crump, David G. Piepgras, John A. Wilson, David W. Newell, R. Deam, John Laidlaw, K. Willmann, J. Heidler, Vincent C. Traynelis, K. Webb, P. Li, A. Mathur, S. Hickenbottom, S. Wirtz, L. Lindsey, H. Stanko, Mark Wilson, S. Salsbury, L. Connery, Robert J. Dempsey, Edward W. Mee, R. Morgan, Ira J. Rampil, V. Roelfsema, Christoph Schul, B. White, A. James, N. Scurrah, C. Thien, Arthur M. Lam, P. Mak, Behnam Badie, Guy L. Clifton, R. Wilson, J. Kruger, Donna L. Auer, M. Mosier, S. Nobles, David J. Stone, A. Law, Timothy G. Short, W. Lilley, H. Yi, Marcel E. Durieux, Daniel K. Resnick, Dhanesh K. Gupta, Paul S. Myles, C. Beven, Thomas N. Pajewski, J. Mason, P. McNeill, F. Lee, Bruno Giordani, Leslie C. Jameson, G. Seever, Stephen P. Lownie, Fredric B. Meyer, P. Porter, K. O'Brien, Vladimir Zelman, John L.D. Atkinson, A. Molnar, H. Hulbert, S. Pai, Neal J. Naff, S. Shaikh, M. Mosa, Pirjo H. Manninen, Derek A. Taggard, Ian A. Herrick, Mark E. Shaffrey, Carol B. Applebury, C. Chase, Neil Duggal, Mark Buckland, M. Quigley, D. Milovan, Michael J. Harrison, Peter J. Kirkpatrick, Armin Schubert, R. Mattison, Ralph F. Frankowski, R. Chelliah, Jana E. Jones, J. Howell, H. Bone, Emine O. Bayman, P. Deshmukh, C. Skilbeck, P. Sutton, B. Chen, L. Carriere, J. Sorenson, Andrew Silvers, F. Sasse, F. Rasulo, Gordon J. Chelune, Zeyd Ebrahim, L. Forlano, Chuanyao Tong, John Moloney, Michael P. Murphy, S. Yantha, W. Kutalek, Kevin K. Tremper, C. Chambers, Sesto Cairo, Robert E. Breeze, A. Meyer, Monica S. Vavilala, C. Salem, H. El-Beheiry, Gregory M. Malham, A. Redmond, L. Koller, Kenneth Manzel, D. Papworth, C. Moy, G. Henry, Elana Farace, H R Winn, E. Cunningham, B. Rapf, J. Smith, Mazen A. Maktabi, Howard Yonas, D. Ellegala, Kevin H. Siu, Lorri A. Lee, Phillip A. Scott, K. Lukitto, Jennifer O. Hunt, D. Blair, P. Schmid, M. Felmlee-Devine, Peter A. Rasmussen, Peter Szmuk, L. Atkins, J. Smart, T. Han, T. Costello, H. Bybee, C. Salmond, Peter Karzmark, Philip E. Stieg, Harold P. Adams, T. Novick, Z. Sha, Martin S. Angst, S. Laurent, G. Smith, F. Vasarhelyi, R. A. Fry, and John A. Walker

Subjects
medicine.medical_specialty, business.industry, Vascular disease, Glasgow Outcome Scale, Odds ratio, Hypothermia, medicine.disease, law.invention, Surgery, Anesthesiology and Pain Medicine, Aneurysm, Randomized controlled trial, law, Anesthesia, Anesthesiology, Medicine, medicine.symptom, business, Prospective cohort study
Abstract

Background Although hypothermia and barbiturates improve neurologic outcomes in animal temporary focal ischemia models, the clinical efficacy of these interventions during temporary occlusion of the cerebral vasculature during intracranial aneurysm surgery (temporary clipping) is not established. Methods A post hoc analysis of patients from the Intraoperative Hypothermia for Aneurysm Surgery Trial who underwent temporary clipping was performed. Univariate and multivariate logistic regression methods were used to test for associations between hypothermia, supplemental protective drug, and short- (24-h) and long-term (3-month) neurologic outcomes. An odds ratio more than 1 denotes better outcome. Results Patients undergoing temporary clipping (n = 441) were assigned to intraoperative hypothermia (33.3 degrees +/- 0.8 degrees C, n = 208) or normothermia (36.7 degrees +/- 0.5 degrees C, n = 233), with 178 patients also receiving supplemental protective drug (thiopental or etomidate) during temporary clipping. Three months after surgery, 278 patients (63%) had good outcome (Glasgow Outcome Score = 1). Neither hypothermia (P = 0.847; odds ratio = 1.043, 95% CI = 0.678-1.606) nor supplemental protective drug (P = 0.835; odds ratio = 1.048, 95% CI = 0.674-1.631) were associated with 3-month Glasgow Outcome Score. The effect of supplemental protective drug did not significantly vary with temperature. The effects of hypothermia and protective drug did not significantly vary with temporary clip duration. Similar findings were made for 24-h neurologic status and 3-month Neuropsychological Composite Score. Conclusion In the Intraoperative Hypothermia for Aneurysm Surgery Trial, neither systemic hypothermia nor supplemental protective drug affected short- or long-term neurologic outcomes of patients undergoing temporary clipping.

Published
2010

4. Intracranial haemorrhage: therapeutic interventions and anaesthetic management

Author

P. Fogarty Mack

Subjects
medicine.medical_specialty, Hematoma, business.industry, medicine.drug_class, Incidence (epidemiology), Intracranial haemorrhage, Anticoagulant, Psychological intervention, Anticoagulants, medicine.disease, nervous system diseases, Clinical trial, Anesthesiology and Pain Medicine, medicine, Humans, Anesthesia, cardiovascular diseases, Medical emergency, Neurosurgery, Intensive care medicine, business, Tomography, X-Ray Computed, Stroke, Intracranial Hemorrhages
Abstract

Intracranial haemorrhage (ICH) is a devastating cause of stroke. Although the total incidence of ICH has remained stable worldwide, the proportion associated with the use of anticoagulant medications is increasing. Innovative interventions developed to improve patient outcomes often require peri-procedure anaesthetic management. This non-systematic review examines the pathophysiology of ICH at a clinical level, reports on novel therapeutic interventions, many of which are currently in clinical trials, and reviews the current published recommendations for the management of patients with ICH.

Published
2014

6. Use of the ProSeal™ laryngeal mask airway in a pregnant patient with a difficult airway during electroconvulsive therapy

Author

P. Fogarty Mack, P. Dhar, D. M. Mitera, and N. Ivascu Brown

Subjects
Adult, medicine.medical_specialty, medicine.medical_treatment, Anesthesia, General, Laryngeal Masks, Electroconvulsive therapy, Laryngeal mask airway, Pregnancy, Humans, Medicine, General anaesthesia, Electroconvulsive Therapy, Difficult airway, Depressive Disorder, business.industry, Pregnant patient, respiratory system, respiratory tract diseases, Surgery, Pregnancy Complications, Anesthesiology and Pain Medicine, Anesthesia, Gestation, Female, Airway management, business
Abstract

We describe a patient at 20-22 weeks gestation, with a known difficult airway, who underwent eight sessions of electroconvulsive therapy using the ProSeal laryngeal mask airway and controlled ventilation. The airway management options for brief periods of general anaesthesia in patients with increased gastric volume are discussed.

Published
2003

7. Perioperative fever and outcome in surgical patients with aneurysmal subarachnoid hemorrhage

Author

David G. Piepgras, David R. McIlroy, John A. Wilson, H. Yi, Lis Evered, J. Sheehan, Marcel E. Durieux, Daniel K. Resnick, L. Kirby, M. Abou-Madi, Michael A. Olympio, Dhanesh K. Gupta, Peter Heppner, Thomas A. Moore, Paul S. Myles, S. Wirtz, Richard Leblanc, C. Beven, Robert J. Dempsey, Edward W. Mee, Nichol McBee, P. Davies, V. Roelfsema, Christoph Schul, B. White, Leslie C. Jameson, A. James, R. Popovic, Kirk J. Hogan, Fredric B. Meyer, Klaus Hahnenkamp, Patrick W. Hitchon, L. Clark, M. Geraghty, Qian Shi, R. Struthers, Howard A. Riina, A. Drnda, D. Chartrand, Bradley J. Hindman, S. Salerno, E. Knosp, J. Bramhall, Bruce P. Hermann, A. Ashtari, N. F. Kassell, Steven W. Anderson, Maria Matuszczak, David L. Bogdonoff, B. Schaefer, John C. VanGilder, K. O'Brien, A. McAllister, D. Luu, L. Jensen, Issam A. Awad, P. Chery, S. Wallace, H. Smith, N. Monteirode Oliveira, G. Downey, R. Elbe, A. Wyss, E. Babayan, J. Woletz, H. Gramke, M. Irons, Gavin Fabinyi, O. Odukoya, R. Hendrickson, Vincent C. Traynelis, A. Dashfield, V. Portman, Alessandro Olivi, James J. Evans, A. Prabhu, Peter C. Whitfield, Gary D. Steinberg, S. Rice, H. Machlin, D. Bisnaire, P. Berklayd, G. Kleinpeter, Patricia H. Davis, D. Bain, William F. Chandler, R. Wilson, W. Ng, K. Webb, F. Shutway, D. Manke, W. Pfisterer, K. Smith, M. Mosa, Michael M. Todd, R. Tack, Philip E. Bickler, S. Alatakis, A. Shahen, D. Dehring, David W. Newell, A. Sills, K. Lukitto, Wink S. Fisher, R. Watson, Teresa Bell-Stephens, Donald S. Prough, M. Maleki, D. Nye, M. Graf, S. Nobles, David J. Stone, Hendrik Freise, R. Deam, John Laidlaw, K. Quader, Douglas Campbell, Fred Gentili, S. Hickenbottom, Marlan R. Hansen, W. Jenkins, T. Broderick, Katherine Harris, Gavin W. Britz, M. Langley, Mary Pat McAndrews, Wendy C. Ziai, Behnam Badie, C. Duffy, Deborah A. Rusy, K. Littlewood, T. Anderson, J. Palmisano, H. Stanko, Henry H. Woo, Edward C. Nemergut, C. Bradfield, A. Molnar, John A. Walker, Christina M. Spofford, D. Dulli, A. Kane, J. Birrell, Harry J. M. Lemmens, M. Lotto, Y. Young, J. Biddulph, T. Cunningham, L. Kim, K. Graves, B. Radziszewska, S. Salsbury, Lawrence Litt, S. Black, F. Bardenhagen, M. Angle, L. Connery, Lisa Hannegan, Helen Fletcher, John A. Ulatowski, Steven L. Giannotta, J. Sturm, R. Sawyer, H. Hulbert, A. Morris, James Mitchell, M. von Lewinski, C. Merhaut, L. Salvia, A. Freymuth, James C. Torner, D. Cowie, Bongin Yoo, Y. Kuo, S. Micallef, Kathryn Chaloner, Neil Duggal, J. Ogden, Peter M. C. Wright, K. Pedersen, C. McCleary, P. Mak, Paul H. Ting, S. Shaikh, B. Hodkinson, J. Sneyd, D. Novy, M. Menhusen, N. Quinnine, James H. Fitzpatrick, Timothy G. Short, M. Angliss, R. Burnstein, D. Moskopp, N. Robertson, Mark Buckland, Jeffrey V. Rosenfeld, W. Lilley, T. Phan, D. Greene-Chandos, M. Wichman, David S. Warner, M. Quigley, P. Tanzi, Ferenc E. Gyulai, D. Daly, Satwant K. Samra, B. Frankel, D. Wilhite, L. Lindsey, K. English, M. Lenaerts, Michel T. Torbey, T. Hartman, John E. McGillicuddy, R. Govindaraj, Alex Konstantatos, M. Woodfield, Steven S. Glazier, Steven D. Chang, C. Greiner, F. Steinman, Alex Abou-Chebl, G. Heard, S. Yantha, Michael J. Souter, C. Hoenemann, Nicholas G. Bircher, H. Van Aken, S. Poustie, D. Hill, J. Kish, Carin A. Hagberg, A. Buchmann, B. O'Brien, J. Shafer, J. Krugh, D. Chandrasekara, R. Eliazo, Mary L. Marcellus, Anish Bhardwaj, E. Thomson, H. El-Beheiry, Bermans J. Iskandar, J. Ormrod, D. Milovan, Michael J. Link, Barbara A. Dodson, S. Crump, K. Willmann, H. Madder, William R. Clarke, Max R. Trenerry, Ramez W. Kirollos, James Gebel, Lisa D. Ravdin, D. Sirhan, C. Miller, R. Grauer, Ira J. Rampil, W. Burnett, Marek A. Mirski, D. Chatfield, J. Haartsen, Jing Wang, H. Lohmann, T. Weber, S. Jackson, J. Quaedackers, Michael Beven, N. Scurrah, L. Pobereskin, J. Walkes, Zhiyi Zuo, Rona G. Giffard, J. Ridgley, James H McMahon, P. Bennett, J. Freyhoff, J. Reynolds, R. Chelliah, J. Jane, Basil F. Matta, P. Smythe, I. Gibmeier, A. Mathur, Karen B. Domino, Robert Greif, A. Wray, W. Hamm, C. Hall, Ralph F. Frankowski, H. Brors, Renee Testa, D. Fishback, Laurel E. Moore, Richard A. Jaffe, O. Moise, P. D'Urso, Argye E. Hillis, C. Weasler, Michael Tymianski, E. Tuffiash, Cynthia A. Lien, David M. Colonna, C. Lothaller, S. Bhatia, H. Bone, S. Harding, Diana G. McGregor, Lauren C. Berkow, A. Gelb, Paul A. Leonard, N. Subhas, Emine O. Bayman, William L. Young, A. Rushton, J. Marler, J. Kruger, Donna L. Auer, D. Lindholm, K. Kieburtz, R. Schatzer, D. Leggett, M. Mosier, D. Anderson, Julie B. Weeks, B. Bauer, F. Saleversusky, Mark Wilson, C. Skilbeck, R. Morgan, D. Van Alstine, S. Olson, M. Hemstreet, Y. Painchaud, P. Sutton, A. Blackwell, Christopher M. Loftus, S. Ryan, J. Winn, R. Silbergleit, R. Peters, J. Woelfer, M. Clausen, Daniel H. Kim, James R. Munis, J. Lang, A. Law, N. Badner, Keith H. Berge, D. Ellegala, Kevin H. Siu, Gordon J. Chelune, Rafael J. Tamargo, Rosemary A. Craen, C. Thien, Peter J. Lennarson, S. Wadanamby, R. Peterson, T. Blount, J. Sanders, Amin B. Kassam, Arthur M. Lam, Z. Thayer, N. Lapointe, C. Meade, Robert F. Bedford, Lorri A. Lee, J. Cormack, E. Tuerkkan, L. Carriere, N. Merah, Robert P. From, J. Sorenson, Phillip A. Scott, S. Pai, Neal J. Naff, Andrew Silvers, P. Fogarty-Mack, Jennifer O. Hunt, P. Porter, Guy L. Clifton, Zeyd Ebrahim, F. Rasulo, Pirjo H. Manninen, Derek A. Taggard, Michael J. Harrison, Ian A. Herrick, R. Mattison, Tsutomu Sasaki, P. Deshmukh, L. Forlano, Vladimir Zelman, Carol B. Applebury, John L.D. Atkinson, D. Sage, D. Sinclair, Matthew A. Howard, Elizabeth Richardson, F. Sasse, J. Heidler, Thomas N. Pajewski, J. Mason, P. McNeill, F. Lee, Bruno Giordani, G. Seever, Stephen P. Lownie, M. Wallace, Mark E. Shaffrey, C. Chase, Robert E. Breeze, Monica S. Vavilala, Kenneth Manzel, D. Papworth, Peter J. Kirkpatrick, Jana E. Jones, J. Howell, P. Li, B. Chen, A. Meyer, C. Salem, W. Kutalek, L. Koller, B. Rapf, J. Smith, Mazen A. Maktabi, Howard Yonas, Gregory M. Malham, A. Redmond, C. Moy, G. Henry, Elana Farace, H R Winn, E. Cunningham, Michael P. Murphy, Kevin K. Tremper, C. Chambers, Sesto Cairo, Chuanyao Tong, John Moloney, T. Novick, Z. Sha, Martin S. Angst, S. Laurent, G. Smith, F. Vasarhelyi, R. A. Fry, D. Blair, P. Schmid, Peter A. Rasmussen, Stephen Samples, Peter Szmuk, L. Atkins, J. Smart, T. Han, T. Costello, M. Balki, H. Bybee, C. Salmond, Peter Karzmark, Philip E. Stieg, Harold P. Adams, C. Lind, M. McTaggart, Johnny E. Brian, Pekka Talke, S. Dalrymple, M. Felmlee-Devine, Simon Jones, G. Ghazali, F. Johnson, Patricia H. Petrozza, B. Hindman, A. Shelton, Daniel Tranel, P. Blanton, L. Moss, H. Macgregor, J. Findlay, J. Weeks, Margaret R. Weglinski, Karen Lane, Daniele Rigamonti, Gregory M. Davis, William L. Lanier, Christopher R. Turner, H. Fraley, F. Mensink, P. Balestrieri, V. Petty, Michael T. Lawton, L. Meng, Gary G. Ferguson, L. Sternau, N. Page, Marc R. Mayberg, B Thompson, E. Dy, Tord D. Alden, and P. Doyle-Pettypiece

Subjects
Perioperative fever, Adult, Male, medicine.medical_specialty, Subarachnoid hemorrhage, Neuropsychological Tests, Severity of Illness Index, Neurosurgical Procedures, Statistics, Nonparametric, Hypothermia, Induced, Severity of illness, Medicine, Humans, Aged, Retrospective Studies, Neurologic Examination, Intraoperative Care, business.industry, Glasgow Outcome Scale, Incidence, Retrospective cohort study, Perioperative, Middle Aged, Subarachnoid Hemorrhage, outcome, aneurysmal subarachnoid hemorrhage, medicine.disease, Hydrocephalus, Surgery, Clinical trial, Logistic Models, Anesthesia, Female, Neurology (clinical), Intraoperative Period, business
Abstract

OBJECTIVE: We examined the incidence of perioperative fever and its relationship to outcome among patients enrolled in the Intraoperative Hypothermia for Aneurysm Surgery Trial. METHODS: One thousand patients with initial World Federation of Neurological Surgeons grades of I to III undergoing clipping of intracranial aneurysms after subarachnoid hemorrhage were randomized to intraoperative normothermia (36 degrees C-37 degrees C) or hypothermia (32.5 degrees C-33.5 degrees C). Fever (> or =38.5 degrees C) and other complications (including infections) occurring between admission and discharge (or death) were recorded. Functional and neuropsychologic outcomes were assessed 3 months postoperatively. The primary outcome variable for the trial was dichotomized Glasgow Outcome Scale (good outcome versus all others). RESULTS: Fever was reported in 41% of patients. In 97% of these, fever occurred in the postoperative period. The median time from surgery to first fever was 3 days. All measures of outcome were worse in patients who developed fever, even in those without infections or who were World Federation of Neurological Surgeons grade I. Logistic regression analyses were performed to adjust for differences in preoperative factors (e.g., age, Fisher grade, initial neurological status). This demonstrated that fever continued to be significantly associated with most outcome measures, even when infection was added to the model. An alternative stepwise model selection process including all fever-related measures from the preoperative and intraoperative period (e.g., hydrocephalus, duration of surgery, intraoperative blood loss) resulted in the loss of significance for dichotomized Glasgow Outcome Scale, but significant associations between fever and several other outcome measures remained. After adding postoperative delayed ischemic neurological deficits to the model, only worsened National Institutes of Health Stroke Scale score, Barthel Activities of Daily Living index, and discharge destination (home versus other) remained independently associated with fever. CONCLUSION: These findings suggest that fever is associated with worsened outcome in surgical subarachnoid hemorrhage patients, although, because the association between fever and the primary outcome measure for the trial is dependent on the covariates used in the analysis (particularly operative events and delayed ischemic neurological deficits), we cannot rule out the possibility that fever is a marker for other events. Only a formal trial of fever treatment or prevention can address this issue.

Published
2009

8. The effect of arteriovenous malformations on the distribution of intracerebral arterial pressures

Author

P, Fogarty-Mack, J, Pile-Spellman, L, Hacein-Bey, A, Osipov, J, DeMeritt, E C, Jackson, and W L, Young

Subjects
Adult, Intracranial Arteriovenous Malformations, Male, Ultrasonography, Doppler, Transcranial, Blood Pressure, Cerebral Arteries, Enbucrilate, Embolization, Therapeutic, Cerebral Angiography, Basilar Artery, Cerebrovascular Circulation, Journal Article, Circle of Willis, Humans, Female, Hypotension, Carotid Artery, Internal, Vertebral Artery
Abstract

PURPOSE: To examine the distribution of arterial hypotension surrounding arteriovenous malformations (AVMs) using a standardized system of vascular zones. METHODS: Mean arterial pressures were recorded during superselective cerebral angiography in 96 patients with AVMs (before they underwent liquid polymer embolization) with the use of a system of vascular zones: E = extracranial internal carotid or vertebral artery; I = intracranial internal carotid or basilar artery; T = transcranial Doppler insonation site (A1, P1, M1); H = halfway to feeder, perfusing normal tissue and shunt; and F = feeder at site of N-butyl cyanoacrylate injection. Distal arterial pressure was measured contralateral to the AVM in an additional 12 patients (zone Hc). RESULTS: Zone pressures (mm Hg +/- SD) were E = 76 +/- 16, I = 69 +/- 15, T = 59 +/- 16, H = 47 +/- 13, and F = 39 +/- 15 mm Hg. Vessel/systemic ratios for the zones were E = 0.97 +/- 0.05, I = 0.86 +/- 0.08, T = 0.75 +/- 0.12, H = 0.61 +/- 0.13, and F = 0.50 +/- 0.18. Measurements were obtained in 29 patients in all five zones and all had similar mean values. Zone Hc pressure was 66 +/- 17 mm Hg and the ratio was 0.78 +/- 0.12, both greater than zone H values. CONCLUSION: Using a standardized system of anatomic vascular zones, we found a progressive and significant decrease in intracerebral arterial pressure in patients with AVMs that proceeded from the circle of Willis to the nidus. Large areas of parenchyma sharing the same parent arterial supply may be subject to chronic hypotension.

Published
1996

9. Cerebral hyperemia after arteriovenous malformation resection is related to 'breakthrough' complications but not to feeding artery pressure. The Columbia University Arteriovenous Malformation Study Project

Author

W L, Young, A, Kader, E, Ornstein, K Z, Baker, N, Ostapkovich, J, Pile-Spellman, P, Fogarty-Mack, and B M, Stein

Subjects
Adult, Intracranial Arteriovenous Malformations, Male, Neurologic Examination, Pseudotumor Cerebri, Brain Neoplasms, Brain, Blood Pressure, Brain Edema, Hyperemia, Carbon Dioxide, Cerebral Arteries, Middle Aged, Cohort Studies, Postoperative Complications, Reference Values, Homeostasis, Humans, Female, Child, Dominance, Cerebral, Blood Flow Velocity, Cerebral Hemorrhage
Abstract

To study the pathophysiology of idiopathic postoperative brain swelling or hemorrhage after arteriovenous malformation resection, termed normal perfusion pressure breakthrough (NPPB), we performed cerebral blood flow (CBF) studies during 152 operations in 143 patients, using the xenon-133 intravenous injection method. In the first part of the study, CBF was intraoperatively measured (isoflurane/N2O anesthesia) during relative hypocapnia in 95 patients before and after resection. The NPPB group had a greater increase (P0.0001) in mean +/- standard deviation global CBF (28 +/- 6 to 47 +/- 16 ml/100 g/min, n = 5) than did the non-NPPB group (25 +/- 7 to 29 +/- 10 ml/100 g/min, n = 90); both arteriovenous malformation groups showed greater increase (P0.05) than did controls undergoing craniotomy for tumor (23 +/- 6 to 23 +/- 6 ml/100 g/min, n = 22). Ipsilateral and contralateral CBF changes were similar. In a second cohort of patients with arteriovenous malformations, CBF was measured at relative normocapnia and it increased (P0.002) from pre- to postresection (40 +/- 13 to 49 +/- 15 ml/100 g/min, n = 57). There were no NPPB patients in this latter cohort. The feeding mean arterial pressure was measured intraoperatively before resection or at the last embolization before surgery (n = 64). The feeding mean arterial pressure (44 +/- 16 mm Hg) was 56% of the systemic arterial pressure (78 +/- 12 mm Hg, P0.0001) and was not related to changes in CBF from pre- to postresection. There was an association between increases in global CBF from pre- to postresection and NPPB-type complications, but there was no relationship of these CBF changes to preoperative regional arterial hypotension. These data do not support a uniquely hemodynamic mechanism that explains cerebral hyperemia as a consequence of repressurization in hypotensive vascular beds.

Published
1996

10. A COMPARATIVE STUDY OF REMIFENTANIL HCl AND FENTANYL IN PATIENTS UNDERGOING CRANIOTOMY FOR SUPRATENTORIAL SPACE OCCUPYING LESIONS

Author

P, Fogarty-Mack, primary, Guy, J, additional, Hindman, B, additional, Baker, K Z, additional, Borel, C O, additional, Maktabi, M, additional, Ostapkovich, N, additional, Yancy, V, additional, Todd, M M, additional, Kirchner, J, additional, Sokoll, M D, additional, Young, W L, additional, McAllister, A, additional, Roland, C, additional, and Warner, D S, additional

Published
1996
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11. POST-OPERATIVE NARCOTIC REQUIREMENT FOLLOWING LUMBAR MICRODISCECTOMY IS RELATED TO PREOPERATIVE PAIN, NOT TO INTRA-OPERATIVE KETOROLAC OR BUPIVACAINE

Author

P Fogarty Mack, A Abalos, Michael H. Lavyne, Lien, Robert B. Snow, and D Haas

Subjects
Bupivacaine, medicine.medical_specialty, Intra operative, Preoperative pain, business.industry, Narcotic, medicine.medical_treatment, Surgery, Ketorolac, Anesthesiology and Pain Medicine, Anesthesia, Medicine, Lumbar microdiscectomy, Post operative, business, medicine.drug
Published
1998

15. NORA: Considerations during COVID 19 Pandemic-The New York Experience.

Author

Anca D, Pua B, and Fogarty Mack P

Abstract

Hospitals rapidly developed new procedure and protocols and engaged in emergency construction projects to adapt their facilities and procedures to provide safe and effective patient care during the COVID- 19 pandemic surge in the New York metropolitan area. Physical and procedural revisions were necessary in the operating room to continue to care for emergent patients both with and without COVID. Similar adaptions in non operating room procedure suites, recognized commonly as Non-operating Room Anesthesiology (NORA), necessitated the engagement of multiple departments in order to develop protocols and to redesign procedural areas. This article describes in detail the collaborative planning, construction and preparation implemented in two academic medical centers with regard to their various NORA programs. In developing patient care, personal protective equipment training and repurposing of procedure suites, the multidisciplinary collaborative teams have taken into consideration the professional national societies governing Gastroenterology, Cardiology, and Interventional Radiology., Competing Interests: None., (© 2020 Elsevier Inc. All rights reserved.)

Published
2021
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16. Intracranial haemorrhage: therapeutic interventions and anaesthetic management.

Author

Fogarty Mack P

Subjects
Anticoagulants adverse effects, Hematoma etiology, Hematoma prevention & control, Humans, Intracranial Hemorrhages diagnostic imaging, Intracranial Hemorrhages etiology, Intracranial Hemorrhages physiopathology, Tomography, X-Ray Computed, Anesthesia methods, Intracranial Hemorrhages therapy
Abstract

Intracranial haemorrhage (ICH) is a devastating cause of stroke. Although the total incidence of ICH has remained stable worldwide, the proportion associated with the use of anticoagulant medications is increasing. Innovative interventions developed to improve patient outcomes often require peri-procedure anaesthetic management. This non-systematic review examines the pathophysiology of ICH at a clinical level, reports on novel therapeutic interventions, many of which are currently in clinical trials, and reviews the current published recommendations for the management of patients with ICH., (© The Author 2014. Published by Oxford University Press on behalf of the British Journal of Anaesthesia. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)

Published
2014
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17. Cerebral blood flow and CO2 reactivity is similar during remifentanil/N2O and fentanyl/N2O anesthesia.

Author

Ostapkovich ND, Baker KZ, Fogarty-Mack P, Sisti MB, and Young WL

Subjects
Adult, Double-Blind Method, Female, Humans, Male, Middle Aged, Remifentanil, Anesthesia, General, Anesthetics, Inhalation, Anesthetics, Intravenous, Carbon Dioxide blood, Cerebrovascular Circulation drug effects, Fentanyl, Nitrous Oxide, Piperidines
Abstract

Background: Remifentanil, a rapidly metabolized mu-opioid agonist, may offer advantages for neurosurgical procedures in which prolonged anesthetic effects can delay assessment of the patient. This study compared the effects of remifentanilnitrous oxide on cerebral blood flow (CBF) and carbon dioxide reactivity with those of fentanyl-nitrous oxide anesthesia during craniotomy., Methods: After institutional approval and informed patient consent were obtained, 23 patients scheduled to undergo supratentorial tumor surgery were randomly assigned to remifentanil or fentanyl infusion groups in a double-blinded manner. Midazolam, thiopental, and pancuronium induction was followed by equipotent narcotic loading infusions of remifentanil (1 microg x kg(-1) x min(-1)) or fentanyl (2 microg x kg(-1) x min(-1)) for 5-10 min. Patients were ventilated with 2:1 nitrous oxideoxygen, and opioid rates were reduced and then titrated to a stable hemodynamic effect. After dural exposure, CBF was measured by the intravenous 133xenon technique at normocapnia and hypocapnia. Reactivity of CBF to carbon dioxide was calculated as the absolute increase in CBF per millimeters of mercury increase in the partial pressure of carbon dioxide (PaCO2). Data were analyzed by repeated-measures analysis of variance, unpaired Student's t-tests, or contingency analysis., Results: In the remifentanil group (n = 10), CBF decreased from 36+/-11 to 27+/-8 ml x 100 g(-1) x min(-1) as PaCO2 decreased from 33+/-5 to 25+/-2 mmHg. In the fentanyl group (n = 8), CBF decreased from 37+/-11 to 25+/-6 ml x 100 g(-1) x min(-1) as PaCO2 decreased from 34+/-3 to 25+/-3 mmHg. Absolute carbon dioxide reactivity was preserved with both agents: 1+/-1.2 ml x 100 g(-1) x min(-1) x mmHg(-1) for remifentanil and 1.5+/-0.5 ml x 100 g(-1) x min(-1) x mmHg(-1) for fentanyl (P = 0.318)., Conclusion: Remifentanil and fentanyl have similar effects on absolute CBF, and cerebrovascular carbon dioxide reactivity is maintained.

Published
1998
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18. Intra-arterial nitrovasodilators do not increase cerebral blood flow in angiographically normal territories of arteriovenous malformation patients.

Author

Joshi S, Young WL, Pile-Spellman J, Fogarty-Mack P, Sciacca RR, Hacein-Bey L, Duong H, Vulliemoz Y, Ostapkovich N, and Jackson T

Subjects
Adult, Blood Pressure drug effects, Calcium Channel Blockers administration & dosage, Cerebral Angiography, Female, Humans, Infusions, Intra-Arterial, Intracranial Arteriovenous Malformations diagnostic imaging, Male, Vascular Resistance drug effects, Acetylcholine administration & dosage, Cerebrovascular Circulation drug effects, Intracranial Arteriovenous Malformations physiopathology, Nitroglycerin administration & dosage, Nitroprusside administration & dosage, Vasodilator Agents administration & dosage, Verapamil administration & dosage
Abstract

Background and Purpose: The mechanism of adaptation to chronic cerebral hypotension in normal brain adjacent to cerebral arteriovenous malformations (AVMs) is unknown. To clarify these mechanisms, we performed cerebral blood flow (CBF) studies in structurally and functionally normal vascular territories during 53 distal cerebral angiographic procedures in 37 patients with AVMs., Methods: CBF was measured using the superselective intra-arterial 133Xe method before and after a 3-minute infusion of either verapamil (1 mg.min-1, n = 23), acetylcholine (1.33 micrograms.kg-1.min-1, n = 7), nitroprusside (0.5 microgram.kg-1.min-1, n = 16) or nitroglycerin (0.5 microgram.kg-1.min-1, n = 7)., Results: Mean +/- SD systemic (76 +/- 13 mm Hg) and distal cerebral arterial (55 +/- 16 mm Hg; range, 20 to 97 mm Hg) pressures were not different among groups. Verapamil increased CBF (45 +/- 12 to 65 +/- 21 mL.100 g-1.min-1, P < .001). There was no effect of acetylcholine (no change [46 +/- 9 to 46 +/- 9 mL.100 g-1.min-1], NS) or nitroglycerin (36 +/- 14 to 36 +/- 13 mL.100 g-1.min-1, NS). Nitroprusside decreased CBF (40 +/- 12 to 31 +/- 11 mL.100 g-1.min-1, P < .001). The percent change in CBF after drug administration was proportional to cerebral arterial pressure for verapamil only (r = .57, P = .0051)., Conclusions: When infused intra-arterially in clinically relevant doses in both hypotensive and normotensive normal vascular territories remote from an AVM nidus, calcium channel blockade caused vasodilation, but there was an absence of response to nitric oxide-mediated vasodilators. These data suggest that (1) the nitric oxide pathway probably is not involved in the adaptation to chronic cerebral hypotension in AVM patients and (2) if our findings in vessels remote from or contralateral to the AVM are applicable to vessels of patients with other forms of cerebrovascular disease, clinically relevant doses of intra-arterial nitrovasodilators may not be useful in the manipulation of cerebrovascular resistance.

Published
1997
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19. Comparison of remifentanil and fentanyl in patients undergoing craniotomy for supratentorial space-occupying lesions.

Author

Guy J, Hindman BJ, Baker KZ, Borel CO, Maktabi M, Ostapkovich N, Kirchner J, Todd MM, Fogarty-Mack P, Yancy V, Sokoll MD, McAllister A, Roland C, Young WL, and Warner DS

Subjects
Adult, Anesthetics, Intravenous, Blood Pressure drug effects, Craniotomy, Double-Blind Method, Female, Heart Rate drug effects, Humans, Male, Middle Aged, Prospective Studies, Remifentanil, Anesthesia, General methods, Fentanyl, Piperidines, Supratentorial Neoplasms surgery
Abstract

Background: Remifentanil hydrochloride is an ultra-short-acting, esterase-metabolized mu-opioid receptor agonist. This study compared the use of remifentanil or fentanyl during elective supratentorial craniotomy for space-occupying lesions., Methods: Sixty-three adults gave written informed consent for this prospective, randomized, double-blind, multiple-center trial. Anesthesia was induced with thiopental, pancuronium, nitrous oxide/oxygen, and fentanyl (n = 32; 2 micrograms.kg.-1. min-1) or remifentanil (n = 31; 1 mu.kg-1.min-1). After tracheal intubation, infusion rates were reduced to 0.03 microgram.kg-1.min-1 (fentanyl) or 0.2 microgram.kg-1.min-1 (remifentanil) and then adjusted to maintain anesthesia and stable hemodynamics. Isoflurane was given only after specified infusion rate increases had occurred. At the time of the first burr hole, intracranial pressure was measured in a subset of patients. At bone flap replacement either saline (fentanyl group) or remifentanil (approximately 0.2 microgram.kg-1.min-1) were infused until dressing completion. Hemodynamics and time to recovery were monitored for 60 min. Analgesic requirements and nausea and vomiting were observed for 24 h. Neurological examinations were performed before operation and on postoperative days 1 and 7., Results: Induction hemodynamics were similar. Systolic blood pressure was greater in the patients receiving fentanyl after tracheal intubation (fentanyl = 127 +/- 18 mmHg; remifentanil = 113 +/- 18 mmHg; P = 0.004). Intracranial pressure (fentanyl = 14 +/- 13 mmHg; remifentanil = 13 +/- 10 mmHg) and cerebral perfusion pressure (fentanyl = 76 +/- 19 mmHg; remifentanil = 78 +/- 14 mmHg) were similar. Isoflurane use was greater in the patients who received fentanyl. Median time to tracheal extubation was similar (fentanyl = 4 min: range = -1 to 40 min; remifentanil = 5 min: range = 1 to 15 min). Seven patients receiving fentanyl and none receiving remifentanil required naloxone. Postoperative systolic blood pressure was greater (fentanyl = 134 +/- 16 mmHg; remifentanil = 147 +/- 15 mmHg; P = 0.001) and analgesics were required earlier in patients receiving remifentanil. Incidences of nausea and vomiting were similar., Conclusions: Remifentanil appears to be a reasonable alternative to fentanyl during elective supratentorial craniotomy.

Published
1997
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20. The effect of arteriovenous malformations on the distribution of intracerebral arterial pressures.

Author

Fogarty-Mack P, Pile-Spellman J, Hacein-Bey L, Osipov A, DeMeritt J, Jackson EC, and Young WL

Subjects
Adult, Basilar Artery physiopathology, Carotid Artery, Internal physiopathology, Cerebral Angiography, Cerebrovascular Circulation, Circle of Willis pathology, Circle of Willis physiopathology, Embolization, Therapeutic, Enbucrilate administration & dosage, Enbucrilate therapeutic use, Female, Humans, Hypotension etiology, Intracranial Arteriovenous Malformations complications, Intracranial Arteriovenous Malformations pathology, Intracranial Arteriovenous Malformations therapy, Male, Ultrasonography, Doppler, Transcranial, Vertebral Artery physiopathology, Blood Pressure physiology, Cerebral Arteries physiopathology, Intracranial Arteriovenous Malformations physiopathology
Abstract

Purpose: To examine the distribution of arterial hypotension surrounding arteriovenous malformations (AVMs) using a standardized system of vascular zones., Methods: Mean arterial pressures were recorded during superselective cerebral angiography in 96 patients with AVMs (before they underwent liquid polymer embolization) with the use of a system of vascular zones: E = extracranial internal carotid or vertebral artery; I = intracranial internal carotid or basilar artery; T = transcranial Doppler insonation site (A1, P1, M1); H = halfway to feeder, perfusing normal tissue and shunt; and F = feeder at site of N-butyl cyanoacrylate injection. Distal arterial pressure was measured contralateral to the AVM in an additional 12 patients (zone Hc)., Results: Zone pressures (mm Hg +/- SD) were E = 76 +/- 16, I = 69 +/- 15, T = 59 +/- 16, H = 47 +/- 13, and F = 39 +/- 15 mm Hg. Vessel/systemic ratios for the zones were E = 0.97 +/- 0.05, I = 0.86 +/- 0.08, T = 0.75 +/- 0.12, H = 0.61 +/- 0.13, and F = 0.50 +/- 0.18. Measurements were obtained in 29 patients in all five zones and all had similar mean values. Zone Hc pressure was 66 +/- 17 mm Hg and the ratio was 0.78 +/- 0.12, both greater than zone H values., Conclusion: Using a standardized system of anatomic vascular zones, we found a progressive and significant decrease in intracerebral arterial pressure in patients with AVMs that proceeded from the circle of Willis to the nidus. Large areas of parenchyma sharing the same parent arterial supply may be subject to chronic hypotension.

Published
1996

21. Superselective intraarterial papaverine administration: effect on regional cerebral blood flow in patients with arteriovenous malformations.

Author

Fogarty-Mack P, Pile-Spellman J, Hacein-Bey L, Ostapkovich N, Joshi S, Vulliemoz Y, and Young WL

Subjects
Adult, Cerebral Angiography, Dose-Response Relationship, Drug, Female, Humans, Intracranial Arteriovenous Malformations diagnostic imaging, Male, Middle Aged, Cerebrovascular Circulation physiology, Intracranial Arteriovenous Malformations physiopathology, Papaverine administration & dosage
Abstract

In this study the authors determined the effect of papaverine on regional cerebral blood flow (rCBF) in the angiographically normal arteriolar beds of patients with arteriovenous malformations (AVMs) who underwent transfemoral superselective angiography. Middle cerebral artery (MCA) branch vessels were catheterized during 10 procedures performed in nine patients. The mean (+/- standard deviation) largest AVM diameter was 4.4 +/- 1 cm. Regional CBF was measured by recording the washout of a bolus of xenon-133 injected through the microcatheter. In a dose-ranging study. rCBF and MCA pressure in two patients were repeatedly measured after 3-minute infusions of papaverine at 0.07, 0.7, and 7 mg/minute. In a single-dose study, an additional eight patients received only the highest dose of papaverine administered over a 3-minute period. In the dose-ranging study, CBF increased from baseline in a dose-dependent fashion. In the single-dose study, papaverine increased in rCBF 103%, from 48 +/- 11 to 95 +/- 23 ml/100 g/minute at an MCA pressure of 55 +/- 23 mm Hg. Increase in rCBF was linearly related (y = 2.2x - 17, r2 = 0.84; p = 0.001) to baseline MCA pressure (range 22-84 mm Hg). Papaverine increases rCBF in a direct proportion to baseline MCA pressure, even at low baseline pressures. Selective infusion of vasodilators should be investigated in acute cerebral hypotension to facilitate either primary or collateral recruitment of CBF by aiding spontaneous autoregulatory vasodilation. In addition, rCBF monitoring may be useful in determining the most effective intraarterial dose of papaverine while minimizing complications due to hyperemia.

Published
1996
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22. Cerebral hyperemia after arteriovenous malformation resection is related to "breakthrough" complications but not to feeding artery pressure. The Columbia University Arteriovenous Malformation Study Project.

Author

Young WL, Kader A, Ornstein E, Baker KZ, Ostapkovich N, Pile-Spellman J, Fogarty-Mack P, and Stein BM

Subjects
Adult, Blood Flow Velocity physiology, Brain Edema physiopathology, Brain Neoplasms physiopathology, Brain Neoplasms surgery, Carbon Dioxide blood, Cerebral Arteries physiopathology, Cerebral Arteries surgery, Cerebral Hemorrhage physiopathology, Child, Cohort Studies, Dominance, Cerebral physiology, Female, Homeostasis physiology, Humans, Intracranial Arteriovenous Malformations physiopathology, Male, Middle Aged, Neurologic Examination, Pseudotumor Cerebri physiopathology, Reference Values, Blood Pressure physiology, Brain blood supply, Hyperemia physiopathology, Intracranial Arteriovenous Malformations surgery, Postoperative Complications physiopathology
Abstract

To study the pathophysiology of idiopathic postoperative brain swelling or hemorrhage after arteriovenous malformation resection, termed normal perfusion pressure breakthrough (NPPB), we performed cerebral blood flow (CBF) studies during 152 operations in 143 patients, using the xenon-133 intravenous injection method. In the first part of the study, CBF was intraoperatively measured (isoflurane/N2O anesthesia) during relative hypocapnia in 95 patients before and after resection. The NPPB group had a greater increase (P < 0.0001) in mean +/- standard deviation global CBF (28 +/- 6 to 47 +/- 16 ml/100 g/min, n = 5) than did the non-NPPB group (25 +/- 7 to 29 +/- 10 ml/100 g/min, n = 90); both arteriovenous malformation groups showed greater increase (P < 0.05) than did controls undergoing craniotomy for tumor (23 +/- 6 to 23 +/- 6 ml/100 g/min, n = 22). Ipsilateral and contralateral CBF changes were similar. In a second cohort of patients with arteriovenous malformations, CBF was measured at relative normocapnia and it increased (P < 0.002) from pre- to postresection (40 +/- 13 to 49 +/- 15 ml/100 g/min, n = 57). There were no NPPB patients in this latter cohort. The feeding mean arterial pressure was measured intraoperatively before resection or at the last embolization before surgery (n = 64). The feeding mean arterial pressure (44 +/- 16 mm Hg) was 56% of the systemic arterial pressure (78 +/- 12 mm Hg, P < 0.0001) and was not related to changes in CBF from pre- to postresection. There was an association between increases in global CBF from pre- to postresection and NPPB-type complications, but there was no relationship of these CBF changes to preoperative regional arterial hypotension. These data do not support a uniquely hemodynamic mechanism that explains cerebral hyperemia as a consequence of repressurization in hypotensive vascular beds.

Published
1996
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