Background: Cardiac amyloidosis (CA) is associated with high rates of intrinsic conduction disease. Patients with CA and cardiac implantable electronic devices (CIED) have demonstrated an eventual reliance on ventricular pacing, regardless of...
Background: In some patients who receive a cardiac resynchronization therapy (CRT) device, the left ventricular ejection fraction (LVEF) does not improve.
Methods: We analyzed patients enrolled in the REVERSE, MADIT-CRT, and BLOCK-HF trials,...