30 results on '"Meléndez-Ramírez G"'
Search Results
2. C16. Infarto cardiocerebral sincrónico secundario a fibroelastoma del seno coronario izquierdo: importancia de la imagen multimodal.
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Aquino-Bruno, H., Meléndez-Ramírez, G., González-Aguilar, C. L., Morales-Portano, J. D., Flores-Puente, F., and Lara-Vargas, J. A.
- Abstract
Justificación: La obstrucción intermitente del ostium coronario por patología tumoral o trombo puede generar un patrón electrocardiográfico similar en la suboclusión del tronco coronario o en enfermedad multivascular, en este contexto la ecocardiografía es una herramienta inicial esencial para evaluar rápidamente las estructuras cardiacas y guiar el tratamiento. identificación del problema: Femenino de 44 años de edad, ingresada por deterioro neurológico y dolor precordial típico de forma simultánea, fue admitida con seis horas de evolución, el electrocardiograma inicial presentó depresión del segmento ST en más de seis derivaciones, con elevación de troponina. El ecocardiograma en la cama de la paciente reportó una masa móvil, pediculada, adherida a la superficie del seno coronario izquierdo. La angiotomografía de corazón confirmó el lugar anatómico, de aproximadamente 12 x 10 mm, móvil, con obstrucción parcial e intermitente del ostium coronario izquierdo. La resonancia magnética de cráneo reportó lesión sugerente de tromboembolismo en territorio de la arteria cerebral media derecha (Figura C16-1). Manejo: Se decidió intervenir quirúrgicamente de urgencia. Mediante bomba extracorpórea, a través de resección transversal de aorta ascendente, se realizó resección de tumoración de aproximadamente 14 mm, con preservación de válvula aórtica; la evolución postoperatoria fue sin complicaciones y fue egresada al quinto día posterior a la cirugía con un NIHSS de 2 puntos. seguimiento: El reporte histopatológico fue de tejido epitelial fibrótico avascular compatible con fibroelastoma papilar. El ecocardiograma de seguimiento al año reportó ausencia de recidiva. Diagnóstico diferencial: Ante la presencia de déficit neurológico y dolor precordial concomitante se deben valorar condiciones que conducen a infarto cerebral-coronario concurrente. conclusión: Ante la presencia de síntomas cerebral y cardiaco, la valoración ecocardiográfica en la cama del paciente es de gran importancia para descartar anormalidades en las estructuras del corazón. El tratamiento quirúrgico debe plantearse de forma urgente por el riesgo de muerte súbita y por el pronóstico excelente posterior a la cirugía. [ABSTRACT FROM AUTHOR]
- Published
- 2022
3. ECG score correlates with myocardial fibrosis assessed by magnetic resonance: A study in Chagas heart disease
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Rodríguez-Zanella, H., Meléndez-Ramírez, G., Velázquez, Leyli, Meave, A., and Alexanderson, E.
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- 2015
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4. T2-weighted cardiac magnetic resonance imaging: a quantitative approach for measuring myocardial edema after reperfusion and its persistency in acute ischemic heart disease
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Meléndez-Ramirez Gabriela, Meave Aloha, and Soenksen Luis R
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2011
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5. Coronary complications in Kawasaki disease: giant aneurysms and thrombosis leading to myocardial infarction.
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Vera-Chávez JS, Villegas-Chávez CA, Meléndez-Ramírez G, López-Rodríguez MDC, and Zamora KDV
- Abstract
Competing Interests: Conflict of interest: None declared.
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- 2025
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6. Cardiac Spindle Cell Sarcoma: A Challenging Presentation and Diagnosis of a Rare Malignant Primary Cardiac Tumor.
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Rodríguez-Esparza JD, Sánchez-Toscano JA, Meléndez-Ramírez G, Fritche-Salazar JF, Rodríguez-Zanella H, Posada-Martínez EL, Arias-Godínez JA, Pozas-Rivas MJ, and Ortiz-Leon XA
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- Humans, Female, Aged, Diagnosis, Differential, Magnetic Resonance Imaging methods, Heart Atria diagnostic imaging, Rare Diseases, Heart Neoplasms diagnosis, Heart Neoplasms surgery, Heart Neoplasms diagnostic imaging, Sarcoma diagnosis, Sarcoma diagnostic imaging, Sarcoma surgery, Echocardiography methods
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We present a case of a 72-year-old female patient with dyspnea and lipothymia. Echocardiography demonstrates an intracavitary cystic mass that fills almost all left atria causing supravalvular obstruction. The magnetic resonance image revealed a 53 × 47 × 48 mm heterogeneous mass with regular edges, tissue characterization suggested myxoma. The patient underwent surgical resection, histopathologic study was compatible with sarcoma. This case underscores the importance of multimodal imaging for an accurate approach and early diagnosis of cardiac intracavitary masses., (© 2024 Wiley Periodicals LLC.)
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- 2025
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7. Thoracic Lymphatic Perfusion Patterns Assessed by Magnetic Resonance Imaging and Late Fontan Failure.
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Ortega-Zhindón DB, Meléndez-Ramírez G, Patrón-Chi SA, Rivera-Buendía F, Calderón-Colmenero J, García-Montes JA, Pérez-Hernández N, Rodríguez-Pérez JM, and Cervantes-Salazar JL
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Background: Fontan circulation maintains an elevated venous pressure; this promotes venous and lymphatic congestion and may lead to late circuit failure. Our objective was to determine the association between thoracic lymphatic perfusion patterns assessed by magnetic resonance imaging and late Fontan failure., Methodology: A retrospective study was performed. We included patients who underwent the Fontan procedure between January 2005 and December 2019 and who were evaluated with lymphatic mapping using magnetic resonance imaging. Lymphatic abnormalities were classified into four types. The prevalence of late failure was determined, and logistic regression analysis was performed to establish the association between the variables of interest and the outcome., Results: Fifty-four patients were included with a mean age at surgery of 8.8 years ± 3.5 years; 42.6% (n = 23) were men. The most frequent diagnosis was tricuspid atresia (50%, n = 27), and the Fontan procedures were mainly performed using an extracardiac conduit (96.3%, n = 52). The prevalence of late Fontan failure was 35.2%. The lymphatic perfusion patterns observed were Type 1 in 25.9% (n = 14), Type 2 in 46.3% (n = 25), Type 3 in 25.9% (n = 14), and Type 4 in 1.8% (n = 1), with no differences in relation to late failure. ( p = 0.42). The age at surgery was found to be a factor associated with the late Fontan failure (OR: 1.23; 95% CI: 1.02-1.48; p = 0.02)., Conclusions: One-third of patients with Fontan circulation may experience late failure, not significantly associated with lymphatic changes, but when the total cavopulmonary connection is completed at an older age.
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- 2024
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8. Transcatheter aortic valve replacement before to breast cancer management: case report and literature review.
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Aquino-Bruno H, Muratalla-González R, Garcia-Garcia JF, Morales-Portano JD, Meléndez-Ramírez G, Ahu-Chandomi Y, Merino-Rajme JA, and Alcantara-Meléndez MA
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Background: The coexistence of aortic stenosis (AS) and neoplastic pathology are common due to shared risk factors with atherosclerotic disease, such as diabetes, inflammatory conditions, and smoking. Severe AS in patients with cancer requires careful assessment in order to select the appropriate therapeutic choices and their timing (i.e. valve treatment first vs. cancer treatment first)., Case Summary: A 66-year-old woman with a history of smoking was admitted to our centre due to heart failure (HF). During her hospitalization, severe AS with severe ventricular dysfunction and cancer were documented. Because of her severe heart disease, she was unable to receive antineoplastic treatment. Therefore, she underwent percutaneous surgery to treat the aortic valve. After that, the management of cancer became possible, which included bilateral radical mastectomy and chemotherapy.We are presenting a case of cancer coexisting with aortic stenosis and reduced left ventricle ejection fraction. In this case, we performed Transcatheter Aortic Valve Replacement (TAVR) with the aim of improving the ejection fraction, followed by chemotherapy., Discussion: Cancer patients may be further disadvantaged by AS if it interferes with their treatment by increasing the risk associated with oncologic surgery and compounding the risks associated with cardiotoxicity and HF. Clinical trials and guidelines on TAVR exclude cohorts with limited life expectancy. Hence, the correct and optimal care for cancer patients with severe AS is complex. The TAVR, for cancer patients with severe AS, can more frequently be the best clinical choice by avoiding cardiopulmonary bypass, minimal invasiveness, and therefore, shorter recovery time., Competing Interests: Conflict of interest: None declared, (© The Author(s) 2024. Published by Oxford University Press on behalf of the European Society of Cardiology.)
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- 2024
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9. Dissection of a giant pulmonary aneurysm: an ominous and infrequent complication of a rare entity.
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Rojas-Sánchez CA, Meléndez-Ramírez G, Alvarado-Toledo Z, and Aquino-Bruno H
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Competing Interests: Conflict of interest: None declared.
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- 2024
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10. Collection of cardiac masses. Up-to-date echocardiography and cardiac MRI tools.
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Baltodano-Arellano R, Falcón-Quispe L, Cupe-Chacalcaje K, Meléndez-Ramírez G, Cachicatari-Beltran A, Patrón-Chi S, Benites-Yshpilco L, Meave-González A, Anicama-Lima W, Becerra SJ, Urdanivia-Ruiz D, Arias-Godínez JA, Rojas P, Moscoso J, and Levano-Pachas G
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- Humans, Echocardiography methods, Magnetic Resonance Imaging methods, Radiography, Heart, Heart Neoplasms surgery
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Heart masses, including tumors (primary and secondary) and pseudotumor (cysts and thrombus), are rare entities, but of increasing interest in cardiac imaging areas. The clinical manifestations are related to the intracardiac effect of mass, embolization, and systemic symptoms in the case of tumors; however, some of them are detected incidentally. Nowadays, imaging techniques and the advancement of their tools perform the morphological, functional, and tissue characterization of the masses, and additionally know the anatomical relationships, which are crucial factors for the treatment and surgical planning., (© 2024 Wiley Periodicals LLC.)
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- 2024
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11. An unusual association: Chronic coronary syndrome and Bland-White-Garland syndrome.
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García-Arias MR, Alvarado-Alvarado JA, Duarte-Argüello JE, Argüello-Portillo CR, Patrón-Chi SA, and Meléndez-Ramírez G
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- Humans, Heart, Pulmonary Artery, Bland White Garland Syndrome complications, Bland White Garland Syndrome diagnosis, Coronary Vessel Anomalies complications, Coronary Vessel Anomalies diagnostic imaging
- Published
- 2023
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12. Chagas Heart Disease: Beyond a Single Complication, from Asymptomatic Disease to Heart Failure.
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Montalvo-Ocotoxtle IG, Rojas-Velasco G, Rodríguez-Morales O, Arce-Fonseca M, Baeza-Herrera LA, Arzate-Ramírez A, Meléndez-Ramírez G, Manzur-Sandoval D, Lara-Romero ML, Reyes-Ortega A, Espinosa-González P, and Palacios-Rosas E
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Chagas cardiomyopathy (CC), caused by the protozoan Trypanosoma cruzi , is an important cause of cardiovascular morbidity and mortality in developing countries. It is estimated that 6 to 7 million people worldwide are infected, and it is predicted that it will be responsible for 200,000 deaths by 2025. The World Health Organization (WHO) considers Chagas disease (CD) as a Neglected Tropical Disease (NTD), which must be acknowledged and detected in time, as it remains a clinical and diagnostic challenge in both endemic and non-endemic regions and at different levels of care. The literature on CC was analyzed by searching different databases (Medline, Cochrane Central, EMBASE, PubMed, Google Scholar, EBSCO) from 1968 until October 2022. Multicenter and bioinformatics trials, systematic and bibliographic reviews, international guidelines, and clinical cases were included. The reference lists of the included papers were checked. No linguistic restrictions or study designs were applied. This review is intended to address the current incidence and prevalence of CD and to identify the main pathogenic mechanisms, clinical presentation, and diagnosis of CC.
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- 2022
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13. Pediatric Porcelain Aorta Secondary to Gaucher Disease Type 3C With Successful Aortic Replacement Surgery.
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Silva-Estrada J, Cervantes-Barragán DE, Reyes-de la Cruz L, Meléndez-Ramírez G, Meave A, and Alaez-Verson C
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Gaucher type 3C disease with porcelain aorta can cause severe hemodynamic impairment. We report the first case, to our knowledge, of a 13-year-old Mexican girl with a GBA1 homozygous c.1342G>C [p.Asp448His] (commonly known as p.D409H) pathogenic variant who underwent extensive aortic replacement. She has been on enzyme replacement therapy and is alive 5 years after surgery. ( Level of Difficulty: Intermediate. )., Competing Interests: The authors have reported that they have no relationships relevant to the contents of this paper to disclose., (© 2022 Published by Elsevier on behalf of the American College of Cardiology Foundation.)
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- 2022
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14. Myocardial Infarction Due to Nonvalvular Papillary Fibroelastoma of the Left Coronary Sinus: The Importance of Multimodal Imaging.
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Aquino-Bruno H, Andrade-Cuellar EN, Meléndez-Ramírez G, Roque-Palacios CJ, Morales-Portano JD, and Flores-Puente F
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- 2022
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15. Collaboration between the National Association of Cardiologists of Mexico, the Mexican Society of Cardiology, and the University of Guanajuato. COVID-19 and Cardiac Imaging Personnel: Review of Sanitary Practices in Early 2021
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Preciado-Anaya A, Carvajal-Juárez I, Llanos-Osuna S, Meléndez-Ramírez G, Paz-Gómez R, Kimura-Hayama ET, González-Ramírez NC, Olmos-Temois SG, de la Peña-Almaguer E, Macías-Hernández AE, Preciado-Gutiérrez ÓU, Bolaños-Hurtado SX, Sobrino-Saavedra ÁN, de la Torre-Gascón A, Jiménez-Santos M, Puente-Barragán A, Ruiz-Monterrubio L, and Jaramillo-Almaguer JE
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- Cardiovascular System diagnostic imaging, Humans, Mexico, COVID-19 prevention & control, Cardiology, Infection Control, Societies, Medical
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The authors of the image chapters of the National Association of Cardiologists of Mexico (ANCAM) and the Mexican Society of Cardiology (SMC), as well as personnel from the Department of Medicine and Nutrition of the University of Guanajuato, together with prominent experts in cardiovascular imaging from Mexico, have collaborated in the review, analysis and expansion of the various health strategies published in the first year of the coronavirus disease 2019 (COVID-19) pandemic, to safely perform cardiac imaging studies. This update aims to reduce the risk of COVID-19 transmission among patients and health-care personnel in the CT, MRI, and nuclear cardiology services. This work was expanded with supplementary information available free of charge on the website www.ancam-imagen.com.
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- 2021
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16. Aortic Calcification in Takayasu Arteritis: Risk Factors and Relationship With Activity and Vascular Lesion. It Is Not Only an Aging Question.
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Meléndez-Ramírez G, Soto ME, Meave A, Ruiz-Elizondo LA, Kimura E, and Alexanderson E
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- Adult, Age Factors, Angiography, Aorta, Female, Humans, Male, Risk Factors, Takayasu Arteritis complications, Takayasu Arteritis diagnosis, Takayasu Arteritis epidemiology, Vascular Calcification diagnostic imaging, Vascular Calcification epidemiology
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Introduction: Aortic calcification is a frequent finding in Takayasu arteritis (TA). The aim of this study was to evaluate the risk factors for aortic calcification in TA and its relationship with disease activity and the presence and type of vascular lesion., Methods: Nineteen patients with TA underwent nonenhanced computed tomography to measure the calcium score of the aorta and its main branches, which were divided into 13 segments. In each segment, the type of vascular lesion was evaluated by noninvasive angiography. Clinical risk factors and disease activity scores were recorded., Results: Eighteen of 19 patients (95%) were women, with a median age of 25 years. Median of calcium score was 69 AU (0-12,465 AU). Eleven of 19 patients (57.9%) had calcium score greater than 0. Age, evolution time, and dyslipidemia were higher in patients with calcium, whereas the National Institutes Health and Dabague disease activity scores were lower. There was no association between the presence of calcium and vascular lesion: 60 of 160 segments (37.5%) without calcium had some lesion, compared with 24 of 68 (35.3%) with calcium score greater than 0, p = 0.75. However, occlusion was more frequent in patients with calcium, whereas wall thickening was in those without calcium., Conclusions: Aortic calcification in TA is related to age, evolution time, and abnormalities in lipid profile and occlusion and, inversely with some activity scores. Identification of calcification could be useful in identifying patients that even without significant lesions might have accelerated atherosclerosis, and who might be benefited with specific treatment., Competing Interests: The authors declare no conflict of interest., (Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2021
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17. Infected thrombus in a Fontan circulation.
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Fritche-Salazar JF, Meléndez-Ramírez G, Arias-Godínez JA, Ruiz-Esparza ME, and Raymundo-Martínez GIM
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- Echocardiography, Heart Ventricles diagnostic imaging, Heart Ventricles surgery, Humans, Fontan Procedure adverse effects, Heart Defects, Congenital surgery, Thrombosis diagnostic imaging, Thrombosis etiology
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The Fontan operation was introduced in 1968 as a palliative treatment for patients with univentricular heart physiology. Natural history and outcomes are poor. By 10 years after Fontan operation, most patients will develop any complication such as tachyarrhythmias, any spectrum of Fontan-associated liver disease, protein-losing enteropathy, heart failure, thrombosis, and infective endocarditis among others. Echocardiography and magnetic resonance imaging (MRI) are the first-line diagnostic tools for detecting such complications. Clinical and imaging follow-up are a mainstay for the evaluation of this patients., (© 2020 Wiley Periodicals LLC.)
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- 2021
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18. Anomalous Origin of the Left Subclavian Artery.
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Sánchez Cornelio MC, Castillo-Castellón F, and Meléndez-Ramírez G
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- Aorta, Thoracic abnormalities, Aorta, Thoracic diagnostic imaging, Child, Preschool, Computed Tomography Angiography, Coronary Angiography, Female, Humans, Infant, Male, Pulmonary Artery abnormalities, Pulmonary Artery diagnostic imaging, Subclavian Artery diagnostic imaging, Young Adult, Abnormalities, Multiple, Coronary Vessel Anomalies diagnosis, Subclavian Artery abnormalities
- Published
- 2019
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19. Interventricular septum involvement with complete atrioventricular block as first manifestation in Takayasu arteritis.
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Meléndez-Ramírez G, Vera-Urquiza R, and Soto ME
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- Adult, Electrocardiography, Female, Heart Conduction System, Humans, Inflammation, Syncope diagnostic imaging, Atrioventricular Block, Heart Septum diagnostic imaging, Takayasu Arteritis diagnostic imaging, Takayasu Arteritis physiopathology
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- 2019
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20. [Evaluation of cardiac tumors by multidetector computed tomography and magnetic resonance imaging].
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Mercado-Guzman MP, Meléndez-Ramírez G, Castillo-Castellon F, and Kimura-Hayama E
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- Adolescent, Adult, Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Myxoma diagnostic imaging, Rhabdomyoma diagnostic imaging, Sarcoma diagnostic imaging, Teratoma diagnostic imaging, Cardiac Imaging Techniques, Heart Neoplasms diagnostic imaging, Magnetic Resonance Imaging, Multidetector Computed Tomography
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Cardiac tumors, are a rare pathology (0.002-0.3%) in all age groups, however, they have a clinic importance, due the affected organ. They are classified in primary (benign or malignant) and secondary (metastasis) types. Among primary type, mixoma, is the most common benign tumor, and sarcoma represents most of the malignant injuries. Cardiac metastasis are more frequent than primary tumors. Clinic effects of cardiac tumors are unspecific and vary according their location, size and agresivity. The use of Multidetector Computed Tomography (MDCT) and Magnetic Resonance Imaging (MRI) assist on the location, sizing, anatomical relationships and the compromise of adyacents structures, besides, MRI is useful for tissue characterization of the tumor. Due to the previous reasons, studies based on noninvasive cardiovascular imaging, have an important role on the characterization of these lesions and the differential diagnosis among them., (Copyright © 2016 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.)
- Published
- 2016
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21. [Evolution of endovascular treatment compared with medical and surgical treatment in patients with aortic syndrome type B].
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Eid-Lidt G, Gaspar Hernández J, González-Pacheco H, Meléndez-Ramírez G, Molina Méndez J, Cervantes Salazar JL, and Ramírez Marroquín S
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Introduction: Surgical treatment is accepted as conventional treatment of patients with acute aortic syndrome associated to ischemic complications. Promising results of thoracic endovascular aortic repair (TEVAR) has expanded its indication to a variety of thoracic aorta pathologies., Objectives: The objective of this study was to evaluate the safety and efficacy of TEVAR during the in-hospital period and at mid-term follow-up, and compare with medical and surgical treatment in patients who presented with acute aortic syndrome (AAS) type B., Material and Methods: Of 113 patients that fulfilled the inclusion criteria, 58 underwent endovascular treatment (Group 1), 34 had medical treatment (Group 2), and 21 had surgical treatment (Group 3)., Results: Global and cardiovascular in-hospital mortality was superior in Group 3 (p = 0.0001). Mean follow-up was 30.4 ± 12.2 months. The survival rate free from cardiovascular death was 92.5, 60.5, and 42.9, in Group 1, 2, and 3, respectively, at 36 months., Conclusions: Our results suggest that endovascular treatment is feasible, safe, and associated with a reduction of in-hospital and mid-term major adverse cardiovascular events, and superior survival rate compared with surgical and medical treatment.
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- 2014
22. [Aortic valve calcification evaluated by echocardiography associated with baseline conduction abnormalities as a predictor for pacemaker placement after aortic valve replacement].
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Ávila-Vanzzini N, Romero-Aragonés C, Verdejo-Paris J, Meléndez-Ramírez G, Arias-Godínez JA, Rodríguez-Chávez LL, Romero-Cárdenas Á, Roldán-Gómez FJ, Ruiz-Esparza ME, Herrera-Bello H, and Kuri-Alfaro J
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- Adult, Aged, Aortic Valve surgery, Aortic Valve Stenosis diagnosis, Atrioventricular Block therapy, Calcinosis diagnosis, Cross-Sectional Studies, Echocardiography methods, Electrocardiography methods, Female, Heart Valve Prosthesis, Humans, Male, Middle Aged, Multivariate Analysis, Pacemaker, Artificial, Retrospective Studies, Aortic Valve pathology, Aortic Valve Stenosis surgery, Atrioventricular Block etiology, Calcinosis surgery, Cardiac Pacing, Artificial methods, Heart Valve Prosthesis Implantation methods
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Introduction: Aortic valve replacement in patients with severe aortic stenosis may be complicated by complete atrioventricular block (CAVB), requiring a permanent pacemaker (PPM) implantation. Predicting this complication could help to plan the surgical., Objective: Determine whether electrocardiography and echocardiography are useful methods for predicting the need for PPM., Material and Methods: A retrospective, observational and transversal study was performed. An echocardiography based semi-quantitative classification was implemented to graduate the extent of calcification of the aortic valve., Results: We included 95 patients; 10 of them required PPM implantation (10.52%). In the pre-surgical basal electrocardiogram we observed that 90% of patients that required PPM had conduction abnormalities as opposed to only 24.7% in the other group, p = 0.001. A 1st and 2nd degree AV block (AVB 1 and 2) was identified in 8 patients that subsequently needed PPM (80%) vs. 5 patients (5.9%), in the group that did not required it, p = 0.001.OR 41.7, IC 95% 6.5-68. We found a grade 3 calcification extent in 80% of patients who required PPM implant compared with only 17.6% of patients in the other group, p = 0.04, OR 4.8, IC 95% 0.76-29. The AVB 1 and 2 were the single predictor in multivariate analysis but the calcification 3 + AVB 1 and 2, increased sensibility., Concluison: In patients with aortic stenosis in whom aortic valve replacement was performed, identifying AVB 1 and 2 on the basal electrocardiogram is a useful tool in order to identify requirement of PPM. The grade 3 of calcification extent increased the sensibility of this prediction.
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- 2014
23. Prevalence and prognostic implications of different types of atrial fibrillation in patients admitted to a coronary care unit.
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González-Pacheco H, Eid-Lidt G, Altamirano-Castillo A, Álvarez-Sangabriel A, González-Hermosillo A, Meléndez-Ramírez G, Briseño-Cruz JL, Galván-Carrasco M, Ordaz-Soto S, and Martínez-Sánchez C
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- Aged, Atrial Fibrillation therapy, Cohort Studies, Female, Humans, Male, Middle Aged, Prevalence, Prognosis, Retrospective Studies, Atrial Fibrillation diagnosis, Atrial Fibrillation epidemiology, Coronary Care Units trends, Patient Admission trends
- Published
- 2014
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24. Agreement between ST elevation and late enhancement evaluated by MRI in patients with acute myocarditis.
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Meléndez-Ramírez G, de Micheli A, Soto ME, Meave-González A, Kimura-Hayama E, Alcántara M, and González-Pacheco H
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- Acute Disease, Adult, Contrast Media, Female, Gadolinium DTPA, Humans, Male, Retrospective Studies, Electrocardiography, Magnetic Resonance Imaging methods, Myocarditis diagnosis
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Background: ECG is widely used in the evaluation of patients with acute myocarditis. Magnetic resonance imaging (MRI) has emerged as the most important imaging tool in the diagnosis of myocarditis. The objective of this study is to determine the agreement between ECG and MRI findings in patients with acute myocarditis., Methods: This is a retrospective cohort that includes 32 consecutive patients with acute myocarditis. ST elevation (STE) in mm was registered in every ECG lead. In every myocardial segment the presence of late enhancement (LE) was registered., Results: STE was found in 75% of the patients, with the inferolateral region being the most frequently affected (46.9%). LE was found in most of the patients (87.5%); the inferolateral wall was also the most frequently affected (50%). There was a moderate agreement between the inferolateral localization of STE and LE in patients with acute myocarditis, k = 0.43, p = 0.01. There was no agreement for the other localizations., Conclusion: There was a moderate agreement between the localization of STE and LE only in the inferolateral localization. LE localization based on the STE localization cannot be inferred, neither vice versa in another localization different from the inferolateral., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
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25. Intramyocardial hemorrhage in spontaneously reperfused myocardial infarction.
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Vargas-Barrón J, González-Pacheco H, Meléndez-Ramírez G, Roldán FJ, Damas-De los Sasntos F, Meave-González A, and Martínez-Sánchez C
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- Aged, Cardiomyopathies diagnosis, Cardiomyopathies etiology, Hemorrhage etiology, Humans, Male, Middle Aged, Coronary Circulation, Hemorrhage diagnosis, Magnetic Resonance Imaging, Cine, Myocardial Infarction physiopathology
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OBJECTIVE. The presence of intramyocardial hemorrhage (IMH) is frequent in patients with acute myocardial infarction (AMI) undergoing primary percutaneous coronary intervention (PPCI). We aim for the presence IMH using cMRI in patients who presented AMI and did not undergo PPCI or thrombolysis. Cardiac magnetic resonance has proven to be a highly sensitive method for detect its presence in the ischemic damaged tissue. MATERIAL AND METHODS. Patients admitted with diagnosis of ST elevation myocardial infarction > 24 h after initial presentation and without reperfusion therapy were enrolled in the study. All patients underwent cardiac magnetic resonance for detecting edema, microvascular obstruction and intramyocardial hemorrhage, followed by coronary angiography. RESULTS. Seven male patients, with median age of 53 years, were enrolled. Cardiac magnetic resonance showed that all patients had microvascular obstruction and edema. Two of them had intramyocardial hemorrhage in association with spontaneous reperfusion demonstrated by angiography. CONCLUSION. The results of our study show that in patients with acute myocardial infarction, intramyocardial hemorrhage occurs not only after therapeutic, but also after spontaneous reperfusion. This is the first time that its presence is demonstrated by cardiac magnetic resonance.
- Published
- 2014
26. Endovascular treatment of type B dissection in patients with Marfan syndrome: mid-term outcomes and aortic remodeling.
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Eid-Lidt G, Gaspar J, Meléndez-Ramírez G, Cervantes S J, González-Pacheco H, Dámas de Los Santos F, Meave-González A, and Ramírez Marroquín S
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- Adult, Aortic Dissection diagnosis, Aortic Dissection etiology, Aortic Dissection mortality, Aorta, Thoracic diagnostic imaging, Aorta, Thoracic pathology, Aortic Aneurysm, Thoracic diagnosis, Aortic Aneurysm, Thoracic etiology, Aortic Aneurysm, Thoracic mortality, Aortography methods, Chronic Disease, Dilatation, Pathologic, Endoleak etiology, Endoleak surgery, Female, Hospital Mortality, Humans, Kaplan-Meier Estimate, Magnetic Resonance Angiography, Male, Marfan Syndrome diagnosis, Marfan Syndrome mortality, Reoperation, Risk Factors, Time Factors, Tomography, X-Ray Computed, Treatment Outcome, Aortic Dissection surgery, Aorta, Thoracic surgery, Aortic Aneurysm, Thoracic surgery, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation mortality, Endovascular Procedures adverse effects, Endovascular Procedures mortality, Marfan Syndrome complications
- Abstract
Objectives: To evaluate the mid-term outcomes, and the aortic remodeling in Marfan syndrome (MFS) patients with type B dissection that were treated with endovascular repair., Background: MFS is a relative contraindication to thoracic endovascular aortic repair (TEVAR). Mid-term aortic outcomes data in MFS after TEVAR are limited, and the occurrence of late events remains unclear., Methods: Of 89 patients that underwent TEVAR between September 2002 and February 2011, 10 patients with mid-term follow-up fulfilled the Ghent criteria for MFS and complicated type B dissection. High risk for open surgery was documented in 90%., Results: The mean age was 35.1 ± 9.4 years and all patients presented with acute aortic syndrome complicating a chronic type B dissection (DeBakey type IIIb). Five patients underwent a Bentall surgical procedure previous to endovascular repair, and in four patients initial TEVAR was followed by surgery of the ascending aorta. Treatment was limited to endovascular repair in only one patient. In-hospital mortality was 10%. At a mean follow-up of 59.6 ± 38.9 months, the cumulated mortality was of 20% and late mortality 11.1%. The rate of secondary endoleak was 44.4%, and late reintervention of 33.3%. Survival freedom from cardiovascular death at 8 years was 80.0%, and positive remodeling was documented in 37.5% of patients., Conclusions: Our results suggest that TEVAR is feasible, safe, and associated with a high reintervention rate and reduced rate of positive aortic remodeling in patients with Marfan syndrome. Survival at 8 years was comparable to contemporary series of open repair., (Copyright © 2013 Wiley Periodicals, Inc.)
- Published
- 2013
- Full Text
- View/download PDF
27. Effect of the treatment with allopurinol on the endothelial function in patients with hyperuricemia.
- Author
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Meléndez-Ramírez G, Pérez-Méndez O, López-Osorio C, Kuri-Alfaro J, and Espinola-Zavaleta N
- Subjects
- Adolescent, Adult, Aged, Allopurinol therapeutic use, Brachial Artery drug effects, Brachial Artery physiopathology, Endothelium, Vascular physiopathology, Gout Suppressants therapeutic use, Humans, Hyperuricemia physiopathology, Male, Middle Aged, Uric Acid blood, Vasodilation physiology, Allopurinol pharmacology, Endothelium, Vascular drug effects, Gout Suppressants pharmacology, Hyperuricemia drug therapy, Vasodilation drug effects
- Abstract
Background: Hyperuricemia has been associated with an increased risk of endothelial dysfunction (ED), cardiovascular and renal disease. The role of uric acid (UA) on vascular damage is still controversial because previous studies have included patients with other risk factor for ED., Objective: To determine if the treatment with allopurinol improved endothelial function in hyperuricemic patients without other risk factors for ED., Material and Methods: In order to gain more insight about the contribution of UA to the ED, we screened 369 apparently healthy male individuals for UA in a period of 9 months. Only 9 patients fulfill the inclusion criteria: UA plasma levels > 7 mg/dL without other risk factors for ED such as hypercholesterolemia, obesity, diabetes and hypertension., Results: Endothelial function, assessed by flow mediated dilatation (FMD) in the brachial artery improved significantly after 30 days of allopurinol treatment (9.6% [6.3-13.3%] vs. 13.7% [11-14.7%], p = 0.036), concomitantly with a decrease of about 45% in the uric acid plasma levels. Other parameters were not modified by allopurinol treatment. Any No significant correlation was found (r = -0.367, p = 0.33) between the ΔUA plasma levels (UA after treatment - UA in basal conditions) and ΔFMD (FMD after treatment - FMD in basal conditions)., Conclusions: These results strongly suggest that allopurinol improves flow-mediated vasodilation regardless of uric acid plasma concentrations.
- Published
- 2012
- Full Text
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28. [Relationship between the ECG and MRI findings in acute myocardial infarction].
- Author
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Meléndez-Ramírez G, de Micheli A, Fratti V, Meave-González A, González-Pacheco H, and Alexánderson E
- Subjects
- Female, Humans, Male, Middle Aged, Electrocardiography, Magnetic Resonance Imaging, Myocardial Infarction diagnosis
- Abstract
Objective: To evaluate the agreement between de ECG leads with ST elevation and the myocardial segments that present myocardial edema in the MRI study, in patients with acute myocardial infarction., Methods: There were included 91 patients with a first ST elevation myocardial infarction (STEMI) with reperfusion therapy during the first 12 hours of onset symptoms, in whom a Cardiovascular Magnetic Resonance (CMR) was done (mean 3 day after the ischemic event). Among the ECG leads (thoracic circle), there were identified those with ST higher elevation. In the CMR there were evaluated the myocardial segments with edema (T2-weighted sequence with hyperintensity)., Results: The ECG leads with the best sensibility in the detection of injury, corresponding to cellular edema, were: basal anterior and anteroseptal: V2; basal inferoseptal LIII and aVF; basal inferior and inferolateral: LIII; basal anterolateral V7-V9; mid anterior and anteroseptal:V2 and V3; mid inferoseptal, inferior and inferolateral: LIII and aVF; mid anterolateral V2 and V8; apical anterior and septal: V2-V4; apical inferior and lateral: LII, LIII and aVF; apex: V2-V4., Conclusions: The surface ECG leads with higher ST elevation corresponded to the myocardial segments with more important edema (defined as someone with hyperintensity in the T2- weighted MRI sequence).
- Published
- 2011
29. Coronary CT angiography in Takayasu arteritis.
- Author
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Soto ME, Meléndez-Ramírez G, Kimura-Hayama E, Meave-Gonzalez A, Achenbach S, Herrera MC, Guering EL, Alexánderson-Rosas E, and Reyes PA
- Subjects
- Adult, Angina Pectoris etiology, Chi-Square Distribution, Coronary Artery Disease etiology, Disease Progression, Dyspnea etiology, Female, Humans, Male, Mexico, Middle Aged, Predictive Value of Tests, Severity of Illness Index, Takayasu Arteritis complications, Young Adult, Coronary Angiography methods, Coronary Artery Disease diagnostic imaging, Takayasu Arteritis diagnostic imaging, Tomography, X-Ray Computed
- Abstract
Objectives: The aim of this study was to use coronary computed tomographic (CT) angiography to characterize coronary artery involvement in patients with known Takayasu arteritis who present with anginal chest pain or shortness of breath., Background: Takayasu arteritis is a primary vasculitis of the large vessels, which mainly affects the aorta and its branches but can also involve the coronary arteries. Coronary CT angiography allows visualization of the coronary vessels and can be used to detect both stenotic and nonstenotic coronary artery lesions., Methods: Eighteen consecutive patients with Takayasu arteritis and angina (typical or atypical) and/or dyspnea underwent contrast-enhanced 64-slice coronary CT angiography. The arterial injury was classified according to the Numano classification. Three patients had prior known coronary artery disease. Coronary arteries were evaluated concerning the presence of obstructive and nonobstructive lesions, and differences between the clinical presentations of patients with and without coronary artery involvement on CT angiography were analyzed., Results: Coronary artery involvement was found in 8 patients (44.4%), 3 of them with clinical activity. A total of 19 coronary lesions were present (13 in ostial locations, 5 in proximal coronary artery segments, and 1 in a mid segment). Eight lesions exceeded 50% diameter reduction (2 in ostial locations and 6 in proximal coronary artery segments). Median disease duration was significantly different between patients with coronary artery involvement (176 months; range 13 to 282 months) compared with those without (21 months; range 1 to 142 months) (p = 0.013)., Conclusions: Coronary CT angiography allows the assessment of coronary artery involvement in patients with Takayasu arteritis. These data confirm prior observations that most coronary lesions are in ostial or proximal coronary artery locations. Disease duration in patients with coronary artery involvement is longer than in patients without., (Copyright © 2011 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2011
- Full Text
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30. [Morbidity and hospital cost reduction in cardiac surgery using a presurgery ambulatory strategy].
- Author
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Ávila-Vanzzini N, Kuri-Alfaro J, Rodríguez-Chávez LL, Meléndez-Ramírez G, Trevethan-Cravioto S, Quiroz-Martínez A, Herrera-Bello H, Herrera-Alarcón V, Martínez-Hernández H, and Martínez-Ríos MA
- Subjects
- Ambulatory Care, Female, Humans, Male, Middle Aged, Postoperative Complications epidemiology, Postoperative Complications etiology, Preoperative Period, Cardiac Surgical Procedures adverse effects, Hospital Costs, Length of Stay statistics & numerical data, Patient Admission statistics & numerical data, Waiting Lists
- Abstract
Unlabelled: In our hospital, the patients that need an elective cardiac surgery are admitted through the admission department on the basis of a waiting list. Since 1999, a fast track to hospitalization program has existed in the National Institute of Cardiology Ignacio Chavez for patients with low surgical risk. Later, in 2004, this program was extended to patients to moderate risk, based on rules accepted worldwide, and our own experience., Objectives: 1) To compare two ways of admission that are used currently: fast track to hospitalization, against admission department waiting list. We compared major events: death or events that increased the hospital stay by more than 14 days (infections, alterations of rhythm and conduction, reoperations and others), 2) To compare the days of hospitalization and money spent by the hospital., Methods: We conformed 2 groups of 347 patients. The admission department waiting list group was admitted before doing their preoperative studies, which is the customary form for hospitalization by our admissions department, while the group of fast track to hospitalization was obligated to have their laboratory exams complete and any other diseases resolved or controlled previously. The monetary cost per patient for the hospital was calculated based on the patient's socioeconomic classification., Statistical Analysis: Student t test was conduncted on independent samples and numerical variables, and Chi square for categorical variables. We considered a p <0.05 to be statistically significant., Results: In average in both groups, 75% underwent valve operation and 25% underwent congenital heart disease repair, 49% were women, age 47 15 years. The comparison between the groups fast track to hospitalization and admission department waiting list group were: Mortality: 4.3% vs. 5.8% (p=0.38). Major events that needed a hospital stay of more than 14 days: 73 vs. 97 cases respectively (p = 0.032). Infections: 22 vs. 29 (p = 0.14). Mediastinitis: 2 vs. 9 respectively (p = 0.033). In-hospital stay: were 11 days vs. 20 days (p = 0.0001), the biggest difference was found in the pre-surgical time: 2 vs. 9 days respectively (p = 0.0001)., Conclusion: The postoperative morbidity in general was lower in fast track to hospitalization group, and the mediastinitis showed a decrease with statistical significance. The time interval between hospital admission an operation in fast track to hospitalization group was significantly shorter. We believe that the decrease in the exposure time to nosocomial pathogens present in the hospital environment was directly related to the low number of mediastinitis. Finally, the decrease in time of hospital stay represented a 32% monetary savings for the hospital.
- Published
- 2010
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