Abstract
A total of 52 patients who underwent coronary artery bypass surgery was divided into two groups according to age, under 69-years-old (n=34) and over 70-years-old (n=18). These two groups were compared with each other. There were no significant differences in numbers of diseased coronary artery, involvement of left main coronary artery and left ventricular ejection fraction between the two groups. There was preoperative prevalence of hypertension and arteriosclerosis obliterans in the older group, and of smoking and obesity in the younger group. Hemodynamic status during the operation was stable in both group. Postoperative complications occurred in 87.8% of older patients. Sepsis and congestive heart failure were more common in these patients. Mortality was 2.9% in the younger group and 16.7% in the older group. We conclude that preoperative risk analysis should be made more precisely and more cautious perioperative management is needed in older patients.
