title: Experimental studies on myocardial contractility and hemodynamics in extrasystoles.
mesh_terms: D000818:Animals; D001011:Aorta; D001783:Blood Flow Velocity; D001810:Blood Volume; D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D002302:Cardiac Output; D004285:Dogs; D004558:Electric Stimulation; D006321:Heart / Q000503:physiopathology*; D006325:Heart Atria / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006439:Hemodynamics; D009119:Muscle Contraction