| Purpose：This study is a retrospective analysis, to learn the predictive risk factorsof acute conversion of off-pump coronary artery bypass grafting (OPCABG) toon-pump coronary artery bypass grafting (ONCABG),referring for making decision inoperating.Method:During January2004to December May2011,613patients underwentplanned off-pump coronary artery bypass grafting were analyzed retrospectively,andcases of acute conversion of off-pump coronary artery bypass grafting to on-pumpcoronary artery bypass grafting(converted group) with compared with unconverted toon-pump coronary artery bypass grafting(unconverted group) by univariate analyses.34cases of off-pump coronary artery bypass grafting patients undergoing into thecardiopulmonary bypass coronary artery bypass graft surgery,579patients withsuccessful completion of off-pump coronary artery bypass grafting.Significant factorswere included in a stepwise logistic regression.Result:1)34patients of off-pump coronary artery bypass grafting in613patientswere acutely converted to on-pump coronary artery bypass grafting because of unstablehemodynamics, the incidence of5.55%.2) The30optional risk factors by analysis ofvariancestatistics,13risk factors of P value <0.1;3) By multivariality logisticregression, operated shorter than2weeks after acute myocardial infarction (OR=15.24,P=0.00), stenosis of left main branch (OR=8.34, P=0.01), LVEF<50%(OR=1.05,P=0.04),and LVED>55mm(OR=4.23,P=0.03) were predictors of acute conversion ofOPCABG to ONCABG.Conclusion：1)The risk factors of off-pump coronary artery bypass graftingtransfer into on-pump coronary artery bypass graftin are complexity;2)The emergencyconverted to cardiopulmonary bypass in off-pump coronary artery bypass graftingincidence of about5.55%.3)When applying off-pump coronary artery bypass grafting in patients with shorter than2weeks after acute myocardial infarction, stenosis of leftmain branch, and LVEF<50%preventive set up of extracorporeal circulation isnecessary. |
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