Po-643-06 evaluation of electrocardiographic and intracardiac electrogram characteristics for response to his-purkinje conduction system pacing in patients with left bundle branch block corrected by his bundle pacing

His-Purkinje conduction system pacing (HPCSP) has been proved to improve clinical outcomes in patients with left bundle branch block (LBBB) and heart failure. However, some patients still remain non-responsive to HPCSP.