title: [Studies on the refractory, supernormal, and vulnerable phases of the heart in patients with bradycardias].
mesh_terms: D000328:Adult; D000368:Aged; D001919:Bradycardia / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012032:Refractory Period, Electrophysiological
vernacular_title: Untersuchungen der refraktären, supernormalen und vulnerablen Phase des Herzens an Patienten mit bradykarden Rhythmusstörungen.