title: Electrical slowing of the heart and post-extrasystolic potentiation.
mesh_terms: D000328:Adult; D000818:Animals; D001145:Arrhythmias, Cardiac / Q000628:therapy*; D005260:Female; D006339:Heart Rate; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D010138:Pacemaker, Artificial; D014693:Ventricular Fibrillation / Q000628:therapy