The arrhythmia is atrial fibrillation. There are two premature ventricular contractions (PVCs) (*) — complexes 2 and 6 — with the same morphology; ie, they are unifocal PVCs.

Still, he said, if the technique is adopted after further exploration in much larger trials, the best candidates might be those with heart failure and multifocal PVCs; unifocal PVCs may respond ...