title: Effect of phentolamine on atrioventricular conduction in man assessed by recording His bundle potential.
mesh_terms: D000200:Action Potentials; D000293:Adolescent; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D006328:Cardiac Catheterization; D002395:Catecholamines / Q000502:physiology; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects* / Q000503:physiopathology; D006339:Heart Rate; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D010646:Phentolamine / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D002395:Catecholamines; D010646:Phentolamine