Myocardial contractile force as influenced by direct coronary surgery.
D001026:Coronary Artery Bypass; D003326:Coronary Circulation; D003327:Coronary Disease / Q000503:physiopathology*; D006321:Heart / Q000503:physiopathology*; D006334:Heart Function Tests; D006801:Humans; D012039:Regional Blood Flow; D012501:Saphenous Vein / Q000601:surgery