Idiopathic ventricular fibrillation

Multiple case reports and series published during the last 70 years have shown that short-coupled premature ventricular complexes (SC-PVCs) (coupling interval <350 ms) usually precede the onset of polymorphic ventricular tachycardia/fibrillation (PVT/VF) in patients with idiopathic ventricular fibrillation (IVF). In a recent review, Belhassen and Tovia-Brodie found that PVCs with longer coupling intervals (350–450 ms) preceded the onset of VF in 15 of 86 patients (17%). Surget et al1 reviewed the data from 79 consecutive patients with IVF.