Cardiac Resynchronization Therapy for Chronic Heart Failure

Abstract

The main treatment for heart failure (HF) is medication. However, in patients with severe HF, the ventricle expands, and intraventricular conduction disturbance occurs. Most commonly, left ventricular remodeling and left bundle branch block are detected. The conduction disturbance leads to a deviation in the timing of contraction between the right and left ventricles, referred to as cardiac dyssynchrony, with resultant deterioration in cardiac function. Cardiac resynchronization therapy has been developed to correct conduction disturbance and resynchronize cardiac contraction.