Why the study?
Proarrhythmic electrophysiological phenomena leading to pacemaker-induced ventricular fibrillation after TAVR have not been well characterized.
Case Report (n=1)
Asynchronous pacing after TAVR-induced AV block can trigger R-on-T-induced ventricular fibrillation and cardiac arrest if pacemaker parameters are not appropriately adjusted.
We report a case of a patient who developed complete atrioventricular block (AVB) following transcatheter aortic valve replacement (TAVR) and subsequently presented an idioventricular rhythm faster than the pacing rate. Unfortunately, pacing was asynchronous which caused R-on-T-induced ventricular fibrillation (VF). The case and sequential ECGs illustrate the co-occurrence of several unfortunate proarrhythmic electrophysiological events which led to cardiac arrest and could have been avoided by appropriate pacemaker parameter adjustments.
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Akerström et al. (2026) conducted a case report in Complete atrioventricular block following transcatheter aortic valve replacement (n=1). Asynchronous pacing was evaluated on Ventricular fibrillation.
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