A comparison of left bundle branch pacing with His bundle pacing in a patient with heart failure and left bundle branch block

摘要

Selective His bundle pacing (HBP) and left bundle branch pacing (LBBP) during the procedure. Intrinsic rhythm with QRS duration (QRSd) of 168 ms; His potential ( ) recorded with HV interval of 78 ms. Selective HBP at threshold of 1 V / 0.5 ms with QRSd equal to 168 ms. Selective HBP at left bundle branch block (LBBB) correction threshold of 3 V / 0.5 ms with QRSd equal to 106 ms. LBBP at different output with constant left ventricular peak activation time and QRSd (D1: LBBP at threshold of 0.6 V / 0.5 ms; D2: LBBP at 5 V / 0.5 ms). Fluoroscopy image showed the final position of HBP lead and LBBP lead. LAO = left anterior oblique; RAO = right anterior oblique.