Dr. Alejandro Vidal Margenat is a compassionate Cardiac Electrophysiologist dedicated to transforming lives with his skills and expertise. Originally from Montevideo, Uruguay, Dr. Vidal earned his Doctor of Medicine degree from the prestigious University of the Republic.

Fueled by his passion for Cardiac Electrophysiology, Dr. Vidal pursued further training during his residency, including an enriching external rotation at the esteemed Cardiac Electrophysiology Service at the Clinical University Hospital in Valencia, Spain. This experience, combined with his European Heart Rhythm Association certifications, set the foundation for an outstanding career in Cardiac Electrophysiology and Cardiac Devices.

Dr. Vidal continued to excel as a Cardiac Electrophysiology Fellow at McGill University in Montreal, Canada. He is currently pursuing a Master’s degree in Experimental Medicine at the same institution. Today, Dr. Vidal shares his knowledge as an Assistant Professor of Cardiac Electrophysiology at the renowned McGovern Medical School at The University of Texas Health Science Center at Houston.

As a member of the UT Physicians – EP Heart team, Dr. Vidal is dedicated to providing exceptional care for patients battling cardiovascular disease and cardiac arrhythmias. His expertise in catheter ablation and cardiac device implantation makes him an invaluable resource for patients seeking a healthier, happier life.

Dr. Vidal’s commitment to advancing medical science is evident in his notable publishing record, involvement in worldwide practice guidelines, and prestigious presentations at major conferences such as the Heart Rhythm Society, American College of Cardiology/World Congress of Cardiology, and the Latin American Heart Rhythm Society.

Dr. Alejandro Vidal is a remarkable physician, educator, and researcher who is passionate about empowering patients and shaping the future of Cardiac Electrophysiology.


Medical School
Universidad de la República, Montevideo, Uruguay
Cardiology, Universidad de la República, Montevideo, Uruguay
Clinical Cardiac Electrophysiology, McGill University, Montreal, Canada
Cardiac Devices Specialist Level 1 Certification, 2017
European Heart Rhythm Association
Cardiac Electrophysiology Specialist Level 1 Certification, 2017
European Heart Rhythm Association

Areas of Interest

Clinical Interests

Ablation, Atrial Fibrillation, CIEDs: Cardiovascular Implantable Electronic Devices, Clinical Management/Prevention, Genetics & Inherited Arrhythmias, Heart Failure, Lead Extraction, Pharmacology, Remote Monitoring, Sudden Cardiac Arrest, Syncope and Autonomic Syndromes, Ventricular Arrhythmia


Peer-Reviewed Publications

Fusion pacing in patients with right bundle branch block who undergo cardiac resynchronization therapy. AlTurki A, Lima PY, Vidal A, Toscani B, Diaz S, Garcia S, Montemezzo M, Al-Dossari A, Bernier ML, Hadjis T, Joza J, Essebag V. J Electrocardiol 2020.

European Heart Rhythm Association (EHRA)/Heart Rhythm Society (HRS)/Asia Pacific Heart Rhythm Society (APHRS)/Latin American Heart Rhythm Society (LAHRS) expert consensus on risk assessment in cardiac arrhythmias: use the right tool for the right outcome, in the right population. JC Nielsen, et al. Europace 2020.

Cardiac resynchronization therapy reprogramming to improve electrical synchrony in patients with existing devices. AlTurki A, Lima PY, Garcia D, Montemezzo M, Al-Dosari A, Vidal A, Toscani B, Diaz S, Bernier M, Hadjis T, Joza J, Essebag V. J Electrocardiol 2019.

Vagal third-degree atrioventricular block in a highly trained endurance athlete. Vidal A, Agorrody V, Abreu R, Viana P, Dodera A, Vidal L. Europace 2017 eux045.

Effects of prolonged endocardial stimulation on left ventricular mechanical synchrony. A pilot study applying gated-SPECT phase analysis. Endocardial stimulation and dyssynchrony. F Ferrando-Castagnettoa, R Ricca-Mallada, A Vidal, R Ferrando. Arch Cardiol Mex 2017.

Paradoxical hypoperfusion suggesting early and severe coronary dysfunction in tako-tsubo disease. F Ferrando-Castagnetto, R Díaz, A Vidal, R Ricca-Mallada, M Lujambio, R Ferrando. Case Reports in Internal Medicine 2016

Left ventricular dyssynchrony in prolonged septal stimulation. F. Ferrando-Castagnetto, R. Ricca- Mallada, A. Vidal. Medicina (Buenos Aires) 2016

Myocardial infarction induced by oral terazosin in a patient with predisposing structural cardiomyopathy: case report. A Vidal Margenat, F Ferrando-Castagnetto, F Martínez, N Lluberas, G Vignolo. Medwave 2016.

Tachycardia-dependent bilateral bundle branch block in ischemic heart disease with systolic dysfunction: case report and review of prognostic implications. Ferrando-Castagnetto F, Vidal A, et al. Medwave. 2015

Spontaneous extradural spinal haematoma. Legnani M, Pippo A, González V, Rodríguez- Milhomens M, Vidal A, Bertullo G, Graña A, Borrás L, Silvariño R. Rev Neurol 2014.

Massive left atrial calcification, tracheobronchopathia osteoplastica and mitral paravalvular leak associated with cardiac rheumatic disease and previous mitral valve replacement. Vidal A, Lluberas N, Florio L, Gómez A, Russo D, Agorrody V, Albistur S, Lluberas R. Int J Cardiol. 2013.

Dabigatran and left atrial appendage thrombus. Vidal A, Vanerio G. J Thromb Thrombolysis. 2012 Nov;34(4):545-7.

Conference Posters

American College of Cardiology annual scientific session and World Congress of Cardiology 2023

Resolution of complete heart block and ventricular pacing dependency with CPAP treatment in a patient with OSA. David C. George, M.D., Zabeer Bhatti, M.D., Aakash Shah, M.D., Scott Schubert, M.D., David Boone, M.D., Ramesh Hariharan, M.D., Alejandro Vidal Margenat, M.D.

Heart Rhythm 2021 – Heart Rhythm Society Meeting

Electric Cardioversion During Sinus Rhythm To Assess Pulmonary Vein Isolation. Vidal A, Alturki A, Faganello L, Neumann M, Diaz S, Toscani B, Kezerle L, Joza J, Essebag V, Bernier M.

2nd Latin American Heart Rhythm Society (LAHRS) Scientific Sessions (2019)

Effect of Direct Oral Anticoagulants, Warfarin, and Antiplatelet Agents on Risk of Device Pocket Hematoma: Combined Analysis of BRUISE CONTROL 1 and 2. Essebag V, Vidal A, Joza J, Birnie DH.

Optimization of Chronic Cardiac Resynchronization Therapy Using Fusion Pacing Algorithm Improves Echocardiographic Response. Vidal A, Alturki A, Paiva Lima P, Diaz S, Hadjis T, Bernier M, Joza J, Essebag V.

Non-reentrant Dual Ventricular Response Atrioventricular Nodal Tachycardia Treated by Slow Pathway Ablation. Vidal A, Toscani B, Diaz S, Paiva Lima P, Faganello L, Bernier M, Joza J, Essebag V.

The Use of Adenosine to Identify Dormant Conduction After Accessory Pathway Ablation: A Single Center Experience And Literature Review. Vidal A, Pegoraro V, Paiva B, Alturki A, Samuel M, Proietti R, Essebag V, Bernier M.

Population-Level Evaluation of Complications After Catheter Ablation in Patients with Atrial Fibrillation & Heart Failure. Samuel M, Vidal A, Abrahamowicz M, Joza J, Pilote L, Essebag V.

Electric Storm Due To Post-Traumatic Left Ventricular Aneurysm. Vidal A, Neumann M, Paiva Lima P, Diaz S, Toscani B, Joza J, Bernier M, Essebag V.

American College of Cardiology 68th Annual Scientific Sessions (2019)

A Wide Complex Tachycardia During Pregnancy. Vidal A, Paiva Lima P, Garcia D, Toscani B, Bernier M, Hadjis T, Essebag V, Joza J.

1st LAHRS Scientific Sessions (2018)

Catheter Ablation Versus Medical Therapy for Atrial Fibrillation in Heart Failure with Reduced Ejection Fraction: A Meta-Analysis of Randomized Controlled Trials. Vidal A, Alturki A, Proietti R, Dawas A, Alturki H, Huynh T, Essebag V.

Prevention of Venous Thrombosis after Electrophysiology Procedures: A Survey of National Practice. Vidal A, Burstein B, Paiva Lima P, Garcia D, Barbosa R, Joza J, Bernier M, Essebag V.

Predicting Electrocardiographic and Echocardiographic Response to Cardiac Resynchronization Therapy: The Use of Strict Left Bundle Branch Block Criteria. Vidal A, Hadjis A, Alturki A, Proietti R, Bernier M, Joza J, Hadjis T, Essebag V.

Uruguayan Congress of Cardiology (2013)

Tachycardia-Dependent Alternating Bundle Branch Block in a Case of Advanced Ischemic Heart Disease with Severe Systolic Dysfunction. Vidal A, Ferrando F, Martinez F, Ricca R, Russo D, Conde V, Rivara A, Pachón J.

Effects of myocardial ischemia on left intraventricular mechanical dyssynchrony in patients with intraventricular conduction disorders and preserved contractile function. Vidal A, Ferrando F, Ricca R, Martínez F, Ferrando R, Lujambio M, Mut F, Lluberas R.

Academic audit of coronary angiographies without significant epicardial lesions in a university invasive cardiology service. Stage I: analysis of the indications for the procedure. Conti G, Díaz R, Ferrando F, Vignolo G, Ricca R, Vidal A, Trujillo P, Lluberas R, Freire D.

Paradoxical Absence of early myocardial perfusion in a case of takotsubo cardiomyopathy. Findings in favor of severe coronary microvascular dysfunction associated with stress. Díaz R, Ferrando F, Vidal A, Ricca R, Martínez F, Lujambio M, Ferrando R, Batista I, Lluberas N.

Mexican Congress of Cardiology (2013)

Evaluation of mechanical left ventricular dyssynchrony in patients with prolonged endocardial stimulation by phase analysis by triggered SPECT. Martínez F, Ferrando F, Vidal A, Ricca R, Ferrando R, Rivara A, Mut F, Suanes K, Lluberas R.

Spanish Congress of Cardiology (2013)

Characterization of left ventricular mechanical dyssynchrony associated with complete right bundle branch block. Ferrando F, Vidal A, Ricca R, Ferrando R, Rivara A, Martínez F, Lujambio M, Lluberas R.

Impact of residual transeptal conduction on left intraventricular mechanical dyssynchrony in complete left bundle branch block. Ferrando F, Martínez F, Ricca R, Ferrando R, Vidal A, Freire D, Rivara A, Lluberas R.

Differences in left ventricular dyssynchrony between patients with native complete left bundle branch block and permanent right ventricular endocardial pacing. Martínez F, Ricca R, Ferrando F, Lujambio M, Vidal A, Ferrando R, Freire D, Vidal L.