“…It is well known that critically timed PVCs can initiate ventricular tachyarrhythmias. Two previous reports on AC inducing ventricular tachyarrhythmias 3,4 showed a different mechanism: undersensed PVC with closely coupled ventricular pacing stimuli triggering ventricular arrhythmia during AC management. It is important to highlight that AC can trigger ventricular arrhythmias in non-CRT devices, as demonstrated in the series from Akdemir et al 4 Conclusion AC can potentially induce PVCs triggering ventricular tachyarrhythmias by pacing the RV alone.…”