The adrenergic system and electrical systole.
D006328:Cardiac Catheterization; D004558:Electric Stimulation; D005471:Fluoroscopy; D006321:Heart / Q000502:physiology*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007275:Injections, Intravenous; D007545:Isoproterenol / Q000008:administration & dosage; D013268:Stimulation, Chemical; D013564:Sympathetic Nervous System / Q000502:physiology*
D007545:Isoproterenol