title: Influence of changes in myocardial contractility on the height and slope of the calibrated apex cardiogram.
mesh_terms: D000804:Angiotensin II / Q000494:pharmacology; D000818:Animals; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002302:Cardiac Output; D004285:Dogs; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006352:Heart Ventricles / Q000187:drug effects; D006439:Hemodynamics; D007545:Isoproterenol / Q000494:pharmacology; D007702:Kinetocardiography; D010701:Phonocardiography; D011433:Propranolol / Q000494:pharmacology; D012121:Respiration, Artificial; D013997:Time Factors; D012122:Ventilators, Mechanical; D016276:Ventricular Function
chemical_list: D000804:Angiotensin II; D011433:Propranolol; D007545:Isoproterenol