Effect of left bundle branch area pacing on new - onset atrial arrhythmia after implantation.

Objective To investigate the effect of left bundle branch area pacing (LBBaP) on new-onset atrial fibrillation (NOAF) and atrial high rate episodes (AHREs) in patients with atrioventricular block (AVB). Methods Eighty-four patients with III°AVB for pacemaker implantaion were divided into the LBBaP group (n =42) and the RVSP group (n = 42) based on the site of the ventricular leads. The two groupswere compared in terms of the pre- and post- operative QRSd, ventricular pacing parameters, complications, incidence of stroke, NOAF and AHREs. Results (1) The incidence of postoperative NOAF and AHREs in the LBBaP group was significantly lower compared with RVSP group (P < 0.05). (2) The p-QRSd in the LBBaP group was significantly shorter compared with RVSP group (P < 0.05). (3) The two groups showed no significant differences in ventricular pacing parameters, incidence of complications and stroke events(P > 0.05). Conclusion LBBaP is superior to right ventricular pacing in reducing the incidence of postoperative AHREs and NOAF in patients after implantation and improving the prognosis of patients. [ABSTRACT FROM AUTHOR]