2Christenson JT, Liker M, Kalangos A. The role of intraaortic counter-pulsation in high-risk OPCAB snrgery.A prospective randomized study [ J ]. Card Surg, 2003,18 : (4) : 286- 287.
3Marra C,De Santo KS,Amamlli C ,et a/.Coronary artery bypass grafting in patients with severe left ventficular dysfunction :A prospective randomized study on the timing of perioperative in- traaortic balloon Pump support [ J ]. Intjartif organs, 2002, 25 (2) : 141-142.