Does angiographic severity of coronary artery disease predict postoperative outcome after coronary artery bypass surgery?

Author： Biancari Fausto Lahtinen Jarmo Salmela Esa Niemelä Matti Pokela Risto Rainio Pekka Lepojärvi Martti Satta Jari Juvonen Tatu

Publisher： Informa Healthcare

ISSN： 1401-7431

Source： Scandinavian Cardiovascular Journal, Vol.37, Iss.5, 2003-09, pp. : 275-282

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Abstract

Objective--It is not clear whether the severity of coronary artery disease as assessed on angiography has an impact on the postoperative outcome after coronary artery bypass surgery (CABG).Design--The angiographic status of 15 coronary arteries/segments of 2233 patients who underwent isolated on-pump CABG was graded according to the following criteria: 1 = no stenosis; 2 = stenosis <50%; 3 = stenosis of 50-69%; 4 = stenosis of 70-89%; 5 = stenosis of 90-99%; 6 = vessel occlusion; and 7 = vessel is not visualized.Results--Thirty-seven patients (1.7%) died during the in-hospital stay and 108 (4.8%) developed postoperatively low cardiac output syndrome. Multivariate analysis showed that along with other risk factors the overall coronary angiographic score was predictive of postoperative death (p = 0.03; OR: 1.027, 95% CI: 1.003-1.052) and of low cardiac output syndrome (p = 0.04; OR: 1.172, 95% CI: 1.010-1.218). The status of the proximal segment of the left circumflex coronary artery, the diagonal arteries and the left obtuse marginal arteries was most closely associated with adverse postoperative outcome.Conclusion--The angiographic status of coronary arteries has an impact on the immediate outcome after CABG.