QRS complex maximum deflection index in aortic cusp premature ventricular complexes

摘要

Highlights ? We reviewed 185 PVC catheter ablation cases and identified 17 in which PVCs were successfully ablated in the aortic cusps. ? The MDI measured 0.53±0.10 (median 0.50, IQR 0.47–0.60). ? In all (100%) cases MDI was >0.40 and in 7 (41%) cases it was >0.55. ? Pseudo-delta wave was absent in all but one PVC ? PVC origin in the aortic cusps should be considered along with the epicardium when MDI is in the vicinity of 0.55.