Sudden Cardiac Arrest
Sudden Cardiac Arrest Yuliya Krokhaleva Marmar Vaseghi INTRODUCTION Sudden cardiac arrest (SCA) is defined as the cessation of all mechanical activity of the heart resulting in the absence of circulation…
Catheter Ablation Therapy
Catheter Ablation Therapy Darshan Krishnappa Kalyanam Shivkumar INTRODUCTION Cardiac rhythm disorders are a frequent cause of morbidity and mortality occurring in 2% to 3% of the general population, with the…
Implantable Cardioverter-Defibrillators
Implantable Cardioverter-Defibrillators Jonathan Lerner Noel G. Boyle INTRODUCTION Since the first implant in 1980, and Food and Drug Administration (FDA) approval in 1985, implantable cardioverter-defibrillators (ICDs) have become the mainstay…
Atrial Fibrillation and Atrial Flutter
Atrial Fibrillation and Atrial Flutter Aron Bender Joseph Hadaya Peyman Benharash Eric Buch Richard J. Shemin INTRODUCTION Epidemiology Atrial fibrillation is the most common arrhythmia encountered clinically, and is a…
Antiarrhythmic Drugs
Antiarrhythmic Drugs Aadhavi Sridharan Noel G. Boyle INTRODUCTION Antiarrhythmic drugs are pharmacologic agents that primarily affect specific ion channel activity, thereby altering membrane conductance and ultimately the cardiac action potential….
Ventricular Tachycardia
Ventricular Tachycardia Justin Hayase Jason S. Bradfield INTRODUCTION Ventricular tachycardia (VT) is an important cause of sudden cardiac death that is estimated to affect between 230,000 and 350,000 people in…
Supraventricular Tachycardias
Supraventricular Tachycardias Roberto G. Gallotti Kevin M. Shannon Jeremy P. Moore INTRODUCTION Epidemiology and Risk Factors Supraventricular tachycardia (SVT) is a general term that is used to describe any arrhythmia…
Electrophysiology Testing
Electrophysiology Testing Duc H. Do Noel G. Boyle INTRODUCTION An electrophysiology (EP) test (study) is a minimally invasive procedure where electrode-tipped catheters are placed into the heart to record electrical…
Bradycardias: Sinus Node Dysfunction and Atrioventricular Conduction Disturbances
Bradycardias: Sinus Node Dysfunction and Atrioventricular Conduction Disturbances Osamu Fujimura† Houman Khakpour †Deceased author. INTRODUCTION Bradycardia is generally defined as a heart rate less than 60 beats per minute (bpm)…
