André d’Ávila

ORCID: 0000-0001-8769-1411
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About
Contact & Profiles
Research Areas
  • Cardiac Arrhythmias and Treatments
  • Atrial Fibrillation Management and Outcomes
  • Cardiac electrophysiology and arrhythmias
  • Cardiac pacing and defibrillation studies
  • Cardiovascular Syncope and Autonomic Disorders
  • Cardiac Imaging and Diagnostics
  • Cardiac Structural Anomalies and Repair
  • Cardiac Valve Diseases and Treatments
  • Cardiovascular Effects of Exercise
  • Cardiomyopathy and Myosin Studies
  • Heart Rate Variability and Autonomic Control
  • Venous Thromboembolism Diagnosis and Management
  • Cardiovascular Function and Risk Factors
  • Advanced MRI Techniques and Applications
  • Blood Pressure and Hypertension Studies
  • Neurological disorders and treatments
  • Mechanical Circulatory Support Devices
  • Cardiac tumors and thrombi
  • Cardiovascular and Diving-Related Complications
  • Cardiac Arrest and Resuscitation
  • Health Systems, Economic Evaluations, Quality of Life
  • ECG Monitoring and Analysis
  • Trypanosoma species research and implications
  • Pericarditis and Cardiac Tamponade
  • Electrostatic Discharge in Electronics

Beth Israel Deaconess Medical Center
2004-2025

Harvard University
2007-2025

Deaconess Hospital
2024-2025

Beth Israel Deaconess Hospital
2024-2025

Boston Children's Hospital
2025

Boston University
2004-2025

Universidade Federal de Santa Catarina
2024

Universidad Científica del Sur
2024

Hadassah Medical Center
2022-2024

Universidade Federal do Rio Grande do Sul
2024

A possible epicardial site of origin may be the reason for unsuccessful endocardial application radiofrequency energy to control recurrent ventricular tachycardia. This study tests feasibility and safety a new mapping technique in patients with Chagas' disease tachycardia.Epicardial was performed through pericardial puncture as an epidural introducer needle advanced into space under fluoroscopic guidance. Medium contrast injected demonstrate position tip, guidewire introduced until its tip...

10.1111/j.1540-8167.1996.tb00559.x article EN Journal of Cardiovascular Electrophysiology 1996-06-01

Document Reviewers: Carina Blomström-Lundqvist, MD, PhD; Angelo A.V. De Paola, Peter M. Kistler, MBBS, Gregory Y.H. Lip, MD; Nicholas S. Peters, Cristiano F. Pisani, Antonio Raviele, Eduardo B. Saad, Kazuhiro Satomi, Martin K. Stiles, MB ChB, Stephan Willems, PhD During the past three decades, catheter and surgical ablation of atrial fibrillation (AF) have evolved from investigational procedures to their current role as effective treatment options for patients with AF. Surgical AF, using...

10.1016/j.joa.2017.08.001 article EN cc-by-nc-nd Journal of Arrhythmia 2017-09-15

Abstract Ventricular arrhythmias are an important cause of morbidity and mortality come in a variety forms, from single premature ventricular complexes to sustained tachycardia fibrillation. Rapid developments have taken place over the past decade our understanding these ability diagnose treat them. The field catheter ablation has progressed with development new methods tools, publication large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook...

10.1093/europace/euz132 article EN cc-by EP Europace 2019-05-10

Effect of Ablation Electrode Contact Force. Introduction: electrode–tissue contact has been shown to be an important determinant lesion size and safety during nonirrigated ablation but little data are available irrigated ablation. We aimed determine the importance force irrigated‐tip Methods Results: Freshly excised hearts from 11 male pigs were perfused superfused using fresh, heparinized, oxygenated swine blood in ex vivo model. One‐minute ablations placed one 3 different power control...

10.1111/j.1540-8167.2009.01693.x article EN Journal of Cardiovascular Electrophysiology 2010-02-01

The ADVENT randomized trial revealed no significant difference in 1-year freedom from atrial arrhythmias (AA) between thermal (radiofrequency/cryoballoon) and pulsed field ablation (PFA). However, recent studies indicate that the postablation AA burden is a better predictor of clinical outcomes than dichotomous endpoint 30-second recurrence. goal this study was to determine: 1) impact on outcomes; 2) effect modality burden. In ADVENT, symptomatic drug-refractory patients with paroxysmal...

10.1016/j.jacc.2024.05.001 article EN cc-by-nc-nd Journal of the American College of Cardiology 2024-05-18

Abstract Background Treatment of atrial fibrillation (AF) with catheter ablation (CA) has evolved significantly. However, real-world data on long-term outcomes are limited, particularly in low- and middle-income countries. Objective This multicenter prospective cohort consecutive patients aimed to evaluate the safety efficacy first-time CA for AF Southern Brazil from 2009 2024. Methods The primary outcome was any tachyarrhythmia (ATA) recurrence. Multivariable Cox proportional hazards model...

10.36660/abc.20240246i article EN cc-by Arquivos Brasileiros de Cardiologia 2025-01-01

Nonsurgical Epicardial Ablation. Introduction : An epicardial site of origin ventricular tachycardia (VT) may explain unsuccessful endocardial radiofrequency (RF) catheter ablation. A new technique to map the surface heart through pericardial puncture was presented recently and opened possibility using mapping guide ablation or We report efficacy safety these two approaches treat 10 consecutive patients with VT Chagas’ disease. Methods Results carried out a regular steerable introduced into...

10.1111/j.1540-8167.1998.tb00907.x article EN Journal of Cardiovascular Electrophysiology 1998-03-01

This report describes a fatal case of left atrial‐esophageal fistula occurring in 72‐year‐old man after radiofrequency catheter ablation paroxysmal atrial fibrillation. Catheter was performed around the pulmonary vein using an 8‐mm‐tip electrode (60 W or 55°C) guided by 25‐mm circular catheter. On day 22 follow‐up, patient presented with seizures followed hematemesis due to atrial–esophageal fistula. His clinical condition deteriorated, and he died speticemia. Thus, is sever complication...

10.1046/j.1540-8167.2004.04083.x article EN Journal of Cardiovascular Electrophysiology 2004-08-01

Transthoracic epicardial catheter ablation is an emerging strategy being used clinically at increasing frequency. However, the efficacy of standard RF on surface heart hindered by (1) lack convective cooling electrode and (2) varying presence adipose tissue interposed between target site. This experimental animal study examines biophysical characteristics radiofrequency (RF) lesions generated either or cooled-tip ventricular epicardium.Nonsurgical subxyphoid pericardial access was achieved...

10.1161/01.cir.0000128039.87485.0b article EN Circulation 2004-04-20

It is common practice to empirically limit the radiofrequency (RF) power when ablating posterior left atrium during atrial fibrillation ablation avoid thermal injury esophagus. The objective of this study was determine whether RF energy delivery limited by luminal esophageal temperature (LET) monitoring associated with a reduction in compared strategy limitation alone.Eighty-one consecutive patients who underwent followed endoscopy were included observational study. All extraostial electric...

10.1161/circep.107.789552 article EN Circulation Arrhythmia and Electrophysiology 2008-08-01

Background— It is common practice to empirically limit the radiofrequency (RF) power when ablating posterior left atrium during atrial fibrillation ablation avoid thermal injury esophagus. The objective of this study was determine whether RF energy delivery limited by luminal esophageal temperature (LET) monitoring associated with a reduction in compared strategy limitation alone. Methods and Results— Eighty-one consecutive patients who underwent followed endoscopy were included...

10.1161/circep.108.789552 article EN Circulation Arrhythmia and Electrophysiology 2008-06-10

Monomorphic ventricular tachycardia (MMVT) is rare in patients with hypertrophic cardiomyopathy (HCM). There are limited data on the utility of catheter ablation for treatment MMVT this population. This study details a series case reports from multiple centers where combined epicardial-endocardial was performed highly selected group HCM-related MMVT.The cohort consisted 10 MMVT. Pericardial access achieved using percutaneous subxyphoid approach. Epicardial and endocardial 3D bipolar voltage...

10.1161/circep.110.957290 article EN Circulation Arrhythmia and Electrophysiology 2011-01-27
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