title: Electrophysiologic properties of phentolamine--a beta adrenergic receptor mediated stimulation.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000188:drug therapy; D001283:Atrioventricular Node / Q000187:drug effects; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010646:Phentolamine / Q000494:pharmacology* / Q000627:therapeutic use; D012849:Sinoatrial Node / Q000187:drug effects
chemical_list: D010646:Phentolamine