Change in left bundle branch potential-ventricular interval during lead implantation: what is the mechanism?
Jiabo Shen1, Kecheng Dai2, Longfu Jiang3
1Department of Cardiology, Ningbo No.2 Hospital, 41 Xibei Street, Ningbo, 315010, Zhejiang, China.
None:
A 75-year-old male with sick sinus syndrome (SSS) underwent left bundle branch (LBB) pacing (LBBP) implantation. Intraoperative recordings showed that the LBB potential-ventricular (LBB-V) interval gradually decreased from 47 to 19 ms (ms). Two-year follow-up indicated stable pacing parameters and consistent electrocardiogram (ECG) results. Despite potential conduction delays caused by lead implantation, a watchful waiting strategy demonstrated recovery potential without impacting long-term prognosis or pacing parameters.
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