title: Counterpulsation by intra-aortic balloon: hemodynamic considerations preceding clinical use.
mesh_terms: D000818:Animals; D001243:Assisted Circulation; D003331:Coronary Vessels / Q000503:physiopathology*; D006331:Heart Diseases / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology*; D006439:Hemodynamics; D013552:Swine