Intermittent Normal Ventricular Conduction in Left Bundle Branch Block After TAVR

Edoardo Cecchini; Gianluca Massaro; Vincenzo Carbone; Giuseppe Sangiorgi

doi:10.1016/j.jaccas.2023.101865

Intermittent Normal Ventricular Conduction in Left Bundle Branch Block After TAVR

JACC Case Rep. 2023 May 6:15:101865. doi: 10.1016/j.jaccas.2023.101865. eCollection 2023 Jun 7.

Authors

Edoardo Cecchini¹, Gianluca Massaro¹, Vincenzo Carbone², Giuseppe Sangiorgi¹

Affiliations

¹ Division of Cardiology, Tor Vergata University, Rome, Italy.
² Outpatient Cardiology, Naples, Italy.

Abstract

In a patient who previously developed left bundle branch block after transcatheter aortic valve replacement, intermittent narrow QRS complexes were recorded on ambulatory electrocardiography monitoring. The peculiar distribution of wide and narrow QRS complexes suggested the presence of a window of supernormality in the refractory period of a branch block that on other occasions exhibited the Wenckebach phenomenon. (Level of Difficulty: Intermediate.).

Keywords: LBBB; TAVR; Wenckebach; electrocardiogram; linking; supernormal conduction.

Publication types

Case Reports