Comparison of electrocardiographic parameters between left bundle optimized cardiac resynchronization therapy (LOT‐CRT) and left bundle branch pacing—cardiac resynchronization therapy (LBBP‐CRT)

Background In patients undergoing cardiac resynchronization therapy using left bundle branch area pacing (LBBP‐CRT), the addition of a coronary sinus lead, that is, Left bundle optimized CRT (LOT‐CRT) might confer additional benefits. Objectives To compare the electrocardiographic characteristics between LBBP‐CRT and LOT‐CRT Materials and Methods Patients with non‐ischemic cardiomyopathy (NICMP) and left bundle branch block (LBBB) with left ventricular ejection fraction