Effects of changes in ventricular size on regional and surface QRS amplitudes in the conscious dog.
D000818:Animals; D001285:Atropine / Q000008:administration & dosage; D001830:Body Surface Area; D003971:Diastole; D004285:Dogs; D004562:Electrocardiography; D006339:Heart Rate; D007545:Isoproterenol / Q000008:administration & dosage; D012965:Sodium Chloride / Q000008:administration & dosage; D013599:Systole; D016276:Ventricular Function
D012965:Sodium Chloride; D001285:Atropine; D007545:Isoproterenol