Paroxysmal Complete Atrioventricular Block With Complete Left Bundle Branch Block Treated With Left Bundle Branch Area Pacing: A Case Report.

Left bundle branch area pacing (LBBAP) can effectively enhance cardiac contraction by engaging the conduction system. LBBAP, compared with right ventricular apex pacing, can reduce QRS duration and enhance left ventricular function. Consequently, LBBAP has been proposed as a viable alternative to cardiac resynchronization therapy (CRT).Here, we present a case illustrating the efficacy of the LBBAP in a patient with a complete atrioventricular block and complete left bundle branch block (CLBBB).