073_16781-K3 NYHA Functional Class or Left Ventricle Ejection Fraction: Who Should we Rely on to Predict Mortality in Cardiac Resynchronization Therapy?

Despite the indisputable role of cardiac resynchronization therapy (CRT) in heart failure, the prognostic significance of clinical or echocardiographic responses to CRT are less well defined. We aimed to evaluate the impact of either clinical or echocardiographic response to CRT on long-term