Abstract :
Background: Cardiac resynchronization therapy (CRT) had shown great promise in improving hospitalization and
mortality of the patients suffering from refractory heart failure (HF) inspite of optimal medical management. The goal of
CRT is to reduce cardiac mechanical dyssynchrony, thereby enabling the heart to contract more efficiently. Mechanical
ventricular dyssynchrony as estimated by electrical dyssynchrony, is assessed with the QRS duration. But electrical and
mechanical dyssynchrony are not well correlated in all HF patients. The dyssynchrony might have been related to the
underlying etiology of HF. Objective: To compare the concordance of mechanical and electrical dyssynchrony in both
ischemic and nonischemic cardiomyopathy patients. Methods: Doppler echocardiography and strain echocardiography
was performed in 76 patients presenting with heart failure due to ischemic cardiomyopathy (n=40) or nonischemic
cardiomyopathy (n=36) with left ventricular ejection fraction
Keyword :
Cardiac resynchronization therapy, Cardiomyopathy, echocardiograpy.