Tag Archives: premature ventricular complexes

Introduction Premature ventricular complexes (PVCs) are a common arrhythmia, defined as a propagating impulse arising from an ectopic ventricular focus.1 When PVCs arise from a single focus, they typically give rise to a monomorphic QRS complex on the surface electrocardiogram (ECG). While most PVCs are benign, in some cases, a high burden of PVCs may be complicated by PVC-induced cardiomyopathy,2 and a small proportion of PVCs are implicated in triggering malignant ventricular arrhythmias.3 PVCs arising from the distal Purkinje system have been observed to induce ventricular fibrillation (VF) more commonly than PVCs arising from other sites.