作者: Bruce J. Leavitt , Gerald T. O’Connor , Elaine M. Olmstead , Jeremy R. Morton , Christopher T. Maloney
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摘要: Background—There is clear evidence that patients having coronary artery bypass graft surgeries with an internal mammary (IMA) have better long-term survival. Some studies suggested a short-term protective effect as well but, because older and sicker are less likely to receive IMA graft, there has been concern the apparent of on mortality confounded by other risk factors. This study was intended examine independent grafts in-hospital while adjusting for patient disease Methods Results—We studied use left (LIMA) in 21 873 consecutive, isolated, first-time procedures from 1992 through 1999. A total 87% received LIMA graft. associated significantly decreased mortality. The crude odds ratio death (LIMA versus no LIMA) 0.26 (95% confidence intervals, 0.22, 0.31; P<0.001). graft...