Characteristics of intracardiac electrogram of the interventricular septum in the left bundle branch pacing
Xiaojie Cai1, Longfu Jiang2, Shanshan Zhuo1
1Department of Cardiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China.
Background:
Left bundle branch pacing (LBBP) has become a hot topic in the field of physiological pacing. However, only a few studies have described the characteristics of the intrinsic intracardiac electrogram (EGM) while placing the left bundle branch (LBB) lead.
Case Presentation:
Herein, we reported a case with atrial premature contractions to the ventricle during the LBBP procedure. Paced and intrinsic (supraventricular) EGMs were recorded and analyzed.
Conclusions:
The myocardium of the interventricular septum could be divided into four regions based on electrophysiology: the right septal area, the left septal area, the endocardium of the left ventricular septum, and the LBB area. This might guide the electrophysiological localization of the LBB lead in the septum.
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