title: Repetitive responses to ventricular extrastimuli: incidence, mechanism, and significance.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D002036:Bundle of His / Q000503:physiopathology; D002037:Bundle-Branch Block / Q000503:physiopathology; D004594:Electrophysiology; D006329:Heart Conduction System / Q000503:physiopathology; D006331:Heart Diseases / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D011690:Purkinje Fibers / Q000503:physiopathology; D013610:Tachycardia / Q000503:physiopathology; D014693:Ventricular Fibrillation / Q000503:physiopathology