title: Effects of external pressures on the pressure-volume relation of the left ventricle.
mesh_terms: D000804:Angiotensin II / Q000494:pharmacology; D002306:Cardiac Volume / Q000187:drug effects; D004548:Elasticity; D006321:Heart / Q000187:drug effects; D006352:Heart Ventricles / Q000033:anatomy & histology / Q000187:drug effects; D006801:Humans; D008954:Models, Biological; D009200:Myocardial Contraction; D009599:Nitroprusside / Q000494:pharmacology; D011312:Pressure; D013314:Stress, Mechanical; D016276:Ventricular Function
chemical_list: D000804:Angiotensin II; D009599:Nitroprusside