Probability and Magnitude of Response to Cardiac Resynchronization Therapy According to QRS Duration and Gender in Nonischemic Cardiomyopathy and LBBB

Study Questions:

How do QRS duration (QRSd) and gender modulate the effect of cardiac resynchronization therapy (CRT) in patients with nonischemic cardiomyopathy (NICM) and left bundle branch block (LBBB)?