New aspects of electrical action of the heart.
D000818:Animals; D001775:Blood Circulation; D001794:Blood Pressure; D004285:Dogs; D004558:Electric Stimulation / Q000295:instrumentation; D004562:Electrocardiography; D004594:Electrophysiology; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D013610:Tachycardia / Q000628:therapy