title: Control of supraventricular premature beats with phentolamine.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D007275:Injections, Intravenous; D010646:Phentolamine / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D010646:Phentolamine