Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Cardiac resynchronization therapy overview
Introduction
Overview
Overview
Cardiac resynchronization therapy (CRT) is an evidence based device treatment for congestive heart failure. CRT is indicated in those patients with symptomatic congestive heart failure despite optimal medical therapy who have a reduced left ventricular ejection fraction(an LVEF ≤ 35%), and a wide QRS (≥ 0.12 sec). It involves timed atrioventricular and biventricular pacing, which can improve left ventricular function, heart failure symptoms and may be associated with a reduction in mortality.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief:: Bhaskar Purushottam, M.D. [2]