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PubMed1992

[Use of the internal mammary artery as a free graft with reimplantation of the proximal end onto the ascending aorta. Apropos of 39 cases].

From January 1987 to January 1991, 104 patients received bilateral internal mammary artery grafts and 39 of them had coronary bypass with a free graft implanted on the ascending aorta. There were 35 men, with a mean age of 57.35 years (range 41 to 70 years). 87% of them had stable angina, and 23 had preoperative myocardial infarction. The left ventricular function was good in 77 per cent of cases. 23 patients had three vessel disease (61.5%), 13 two vessel diseases (30.7%), 2 one vessel disease (5.12%) and one a left main coronary stenosis. Left internal mammary artery was used in two patients on the left descending artery and the right internal mammary artery was used in 37 patients: 15 on the circumflex, 15 on the right coronary, 4 on the LDA and 3 on the diagonal artery. Five patients had one graft, 32 two grafts and one three grafts (bilateral mammary and saphenous vein). Hospital mortality was 2.56% (1 patient) and there were 2 late deaths (5.12%). There were 5 perioperative myocardial infractions (12.8%) and no sternal infections. The mean follow up is 21 months (range 3 to 46 months). At follow-up, 34 patients (87.2%) were asymptomatic, and there were no myocardial infarctions. Postoperative angiography in 8 patients (mean postoperative time 2.5 months) showed that all the grafts were patent. This analysis demonstrates that free IMA graft has a low operative risk and provides excellent long term functional improvement and survival.

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