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.
Cecchini, E., Massaro, G., Carbone, V., Sangiorgi, G. (2023). Intermittent Normal Ventricular Conduction in Left Bundle Branch Block After TAVR. JACC. CASE REPORTS, 15 [10.1016/j.jaccas.2023.101865].
Intermittent Normal Ventricular Conduction in Left Bundle Branch Block After TAVR
Edoardo Cecchini;Gianluca Massaro;Giuseppe Sangiorgi
2023-01-01
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.| File | Dimensione | Formato | |
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