title: Pacing on demand in the treatment of atrioventricular conduction-disturbances of the heart.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001145:Arrhythmias, Cardiac / Q000628:therapy*; D001331:Automation; D001794:Blood Pressure / Q000187:drug effects; D004285:Dogs; D004562:Electrocardiography; D006321:Heart / Q000187:drug effects; D006327:Heart Block / Q000628:therapy*; D006801:Humans; D010138:Pacemaker, Artificial
chemical_list: D000109:Acetylcholine