2Karadeniz U,E rdemli O, Yamak B,et al. On — pump beatingheart versus hypothermic arrested heart valve replacement sur-gery [J] . J Card Surg,2008,23(2) : 107-113.
3Salemo TA,Panos AL’Tian G,et al. Surgery for cardiac valvesand aortic root without cardlop legic arrest ( “ beating heart” ):experience with a new method of myocardial perfusion [ J] . JCard Surg,2007,22(6):459-464.
