A total of 40 patients having a diagnosis of atherosclerotic coronary arterial disease were analysed on the operative outcomes according to variables as follows: 1) preoperative risk factors such as age, sex, CCS (Canadian Cardiovascular Society)
functional class, type of angina, number of diseased vessel, presence of left main coronary artery stenosis, previous history of habitual smoking and presence of other medical diseases (diabetes mellitus, essential hypertension), 2) preoperative
management such as intravenous infusion of nitroglycerine, preoperative IABP (intra-aortic balloon pump) support and whether the operation was scheduled as emergency or not, 3) intraoperative variables such as infusion method and composition of
cardioplegic solutions, number of distal anastomosis, use of internal mammary artery, total cardiopulmoary bypass time and total cross clamp time.
Complications included operative death in 12.5%, perioperative myocardial infarction in 25.0% and perioperative arrhythmia in 17.5%. Nineteen perioperative variables were analyzed to identify risk factors for these end points. For operative
death,
presence of left main coronary artery stenosis(p=0.056) and cardiopulmonary bypass time (p=0.029) were significant in the univariate analysis, but presence of left main coronary artery lesion (p=0.011, χ*=6.45) and abscence of preoperative of
IABP
support (p=0.069, x*=3.30) were independent predictor in multivariate analysis (stepwise linear logistic regression). (Korean J Thoracic Cardiovas Surg 1994; 27:141-7)
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