Long-term Survival after Coronary Artery bypass Surgery

Choi, Jong Bum; Lee, Mi Kyung; Jeong, Eun Taik

Abstract

BACKGROUND: There were very few reports on long-term survival after coronary artery bypass graft (CABG) in this country. The aim of this study is to investigate the long-term result in patients undergoing CABG in the early period in this hospital. MATERIAL AND METHOD: One-hundred and fourteen patients (male/female, 79/35) who had undergone CABG from December 1990 to December 1995 were identified. Most of the patients had undergone CABG using left internal thoracic artery and vein grafts under cardiopulmonary bypass and cardioplegic arrest, and the proximal and distal anastomoses of the grafts were performed during the single aortic cross clamping period. RESULT: During the mean follow-up period of 135.5+/-17.9 months, 37 patients (32.5%) were dead and only 10 patients (27%) of them died of cardiac cause. Risk-unadjusted survival after CABG was 95.6%, 85.1%, 71.8%, and 57.9% at 1, 5, 10, and 13 years, respectively, and cardiac death-free survival was 97.4%, 94.5%, 92.1%, and 81.3% at 1, 5, 10, and 13 years, respectively. Predictable factors of long-term survival were sex and age. Predictable factors of postoperative coronary angiography and intervention were hypertension, diabetes, and dyslipidemia.
CONCLUSION
Long-term survival after CABG in the early operative period was comparable to the previous outcomes, and females showed the better long-term survival. Postoperative coronary intervention was more common in patients with preoperative dyslipidemia.