title: Atrioventricular conduction defects in patients with sinus bradycardia. Analysis by His bundle recordings.
mesh_terms: D000368:Aged; D001146:Arrhythmia, Sinus / Q000150:complications / Q000628:therapy; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000209:etiology; D001285:Atropine; D001919:Bradycardia / Q000150:complications / Q000175:diagnosis* / Q000628:therapy; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D010138:Pacemaker, Artificial
chemical_list: D001285:Atropine