A Rare Case of RNRVAS Termination and Re-Initiation Visualized on a 12-Lead ECG.

This case illustrates both termination and re-initiation of repetitive non-reentrant ventriculoatrial synchrony (RNRVAS) visualized on a standard 12-lead ECG. It highlights how pacemaker algorithms such as VIP and PVC response, together with abnormal atrial refractoriness, can trigger or terminate RNRVAS.