The current trend in coronary artery surgery is to revascularize the left coronary artery branches with bilateral internal thoracic arteries (ITA). For this procedure, the right ITA is usually grafted to the left anterior descending coronary artery while the circumflex coronary artery is revascularized by the left ITA. The mid to long-term results of the left ITA on the circumflex system were examined in this study. Forty of 48 patients operated on between 1996 and 1998 who had undergone revascularization of the left coronary artery with both ITAs and who fulfilled the study criteria underwent control coronary arteriography to determine the mid to long-term patency of LITA grafts on the circumflex artery. The median time for follow-up was 53 months (range, 49 to 70 months). Of the 40 angiographically controlled patients, 35 had patent left ITA to circumflex artery anastomosis (87.5%). One graft stenosis and four graft occlusions were observed. In the same group, right ITA to left anterior descending coronary artery anastomoses were patent in 38 patients (95%). Left ITA grafts seem to be the conduit of choice for revascularization of the circumflex coronary artery. In combination with the in situ right ITA to left anterior descending coronary artery anastomosis, in situ left ITA grafting to the circumflex system can be done with acceptably low mortality and excellent long-term patency rates. Its utilization is particularly advised in young patients where the importance of left coronary artery revascularization by bilateral ITA grafts is increased.
Although surgical treatment of left ventricular aneurysms has been performed for a long time, it is still a point of debate. In this study, we investigated 159 patients who had undergone surgery for a left ventricular aneurysm in our clinic between 1985 and 1994. Perioperative mortality, long term survival rates, and parameters which probably affect these ratios were evaluated. All of the patients except one were followed by clinical records, mail or phone. Classic linear repair (111 cases), plication (46 cases), and Dor plasty (2 cases) were performed. Revascularisation procedure was also performed in 140 (88%) cases. The average number of distal anastomosis was 2.6. Twenty cases (12.6%) died in the perioperative period. The most important parameter which affected early mortality was the requirement for an intra-aortic balloon pump in the postoperative period. Mean follow-up duration was 47 +/- 35 months. Forty-two late deaths occurred in this period. The overall 5-year survival rate was 71%. Predictors for long term mortality were related to preoperative left ventricular function, presence of congestive heart failure, and poor functional capacity. The type of surgery did not affect short and long term survival. The functional capacity of the survivors was improved. In conclusion, surgical treatment of left ventricular aneurysms with classic linear repair and plication had acceptable short and long term survival rates and improved functional capacity. The most important predictor of survival in either the early or late postoperative period was preoperative left ventricular function.
