Aortic Reimplantation of the Superior Mesenteric Artery for Atherosclerotic Lesions of the Visceral Arteries: Sixty Cases

Abstract

We report the results of a series of patients who had isolated or associated reimplantation of the superior mesenteric artery directly into the infrarenal aorta. Between 1967 and 1988, a total of 91 revascularizations for atheromatous lesions of the visceral arteries were performed in 89 patients. The superior mesenteric artery was reconstructed in 87 instances, 60 of which were direct or indirect reimplantations into the juxtarenal aorta. The procedure was isolated in 51 cases, and associated with the revascularization of another visceral artery in nine cases. These 60 patients were divided into three groups: Group A--seven patients undergoing emergency operation for acute intestinal ischemia; Group B--30 patients operated upon for chronic intestinal angina; and Group C--22 asymptomatic patients who underwent prophylactic revascularization. Two patients died in the immediate postoperative period (3.5%). Although most of the 29 late deaths were due to vascular disorders, only one was secondary to intestinal infarction. Twenty-one patients followed had good functional results; six patients had relapse of abdominal pain. Three of these underwent repeat revascularization of the superior mesenteric artery 12 days, 18 months, and 22 months, postoperatively. Follow-up ranged from six months to 18 years. Two patients were lost to follow-up. Overall actuarial survival at five years was 69.60 +/- 15%. In our experience, isolated reimplantation of the superior mesenteric artery on the anterior aspect of the infrarenal aorta is a simple and reliable technique which affords good long-term results.