2Martinez-Selles M,Hortal J,Barrio J M,et al.Treatment and outcomes of severe cardiac disease with surgical indication in very old patients[J].Int J Cardiol,2007,119(1):15.
3Kosuge K,Sasaki H,Ikarashi T,et al.Risk factors for severe coronary artery disease casecontrol study of patients who have undergone coronary artery bypass grafting[J].J Atheroscler Thromb,2006,13(1):62.
4Eagle K A,Guyton R A,Davidff R,et al.ACC/AHA guide-lines for coronary artery bypass graft surgery:a report of the Amerian College of Cardiology/Amerian Heart Association Task Force On Practice Guidelines(Committee torevisethe 1991 Guidelines for coronary artery bypass graft surgery)[J].J Am coll Cardiol,1999,34(4):1262.
4Takami Y, lna H. Relation of intraoperative flow measurement with postoperative quantitative angiographic assessment of coronary artery bypass grafting. Ann Thorac Surg, 2001,72 : 1270-1274.
5Matre K, Birkeland S, Hessevik l, et al. Comparison of transit-timeand Doppler ultrasound methods for measurement of flow in aortocoronary bypass grafts during cardiac surgery. Thorac Carciovasc Surg, 1994,42 : 170-174.
6D'Ancona G, Karamanoukian HL, Ricci M, et al. Graft revision after transit time flow measurement in off-pump coronary artery bypass grafting. Eur J Cardiothorac Surg, 2000,17:287-293.
7lzzat MB, Yim AP. Didn't they do well? Ann Thorac Surg, 1997,64:1-2.
8Walpoth BH, Bosshard A, Genyk l, et al.Transit-time flow measurement for detection of early graft failure during myocardial revascularization. Ann Thorac Surg, 1998,66 : 1097-1100.
9Jaber SF, Koenig SC, BhaskerRao B, et al. Role of graft flow measurement technique in anastomotic quality assessment in minimally invasive CABG. Ann Thorac Surg, 1998,66 : 1087-1092.
10Elbeery JR, Brown PM,Chitwood WR.Intraoperative M1DCAB arteriography via the left radial artery: a comparison with Doppler ultrasound for assessment of graft patency. Ann Thorac Surg, 1998,66:51-55.