Redo coronary artery bypass grafting: early and mid-term results.

Objectives: Redo coronary artery bypass grafting (CABG) has been gradually increasing in Japan. We prospectively collected redo-CABG data and evaluated these the early and remote results.

Methods: Between 01/01/1994 and 06/30/2002, a total of 71 patients underwent isolated redo-CABG in our hospital group. The interval between operations was 7.8 +/- 6.1 years. Previous surgery was CABG in all patients. Perioperative, early angiographic, and follow-up results were analyzed.

Results: The mean number of grafts was 2.9 +/- 1.2. There were 4 incidences of injury to the heart or graft during sternal re-entry or during dissection of the heart. There was 1 hospital death (2.8%) and 19 major complications (26.8%), including 7 patients (9.9%) with postoperative congestive heart failure and 2 (2.8%) with postoperative myocardial infarction. Postoperative angiography was obtained in 47 patients and their overall stenosis free patency rate was 93.9%. Follow-up was completed for all hospital survivors with a mean follow-up of 3.9 +/- 2.2 years. The event-free and survival rates at 5 years were 76.4% and 83.9%, respectively.

Conclusion: In our limited experience, redo-CABG was performed with acceptable risks and its long-term results were satisfactory.