Influence of the sympathetic system on the pacemaker suppression which follows overdrive.
D000680:Amyl Nitrite; D000818:Animals; D004285:Dogs; D004558:Electric Stimulation; D004562:Electrocardiography; D006327:Heart Block / Q000209:etiology / Q000503:physiopathology; D006329:Heart Conduction System / Q000187:drug effects / Q000502:physiology* / Q000503:physiopathology; D006339:Heart Rate; D006352:Heart Ventricles / Q000503:physiopathology; D007022:Hypotension / Q000139:chemically induced / Q000503:physiopathology; D008297:Male; D009638:Norepinephrine / Q000494:pharmacology; D011433:Propranolol / Q000494:pharmacology; D013233:Stellate Ganglion / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology*; D016276:Ventricular Function
D000680:Amyl Nitrite; D011433:Propranolol; D009638:Norepinephrine