Limb salvage and patency after aortic reconstruction in younger patients

Abstract

Purpose: The purpose of this report was to compare patient characteristics, treatment, and outcome in younger and older patients with aortoiliac occlusive disease. Methods: The medical records of 56 patients ≤50 years of age (Group ≤50) were retrospectively reviewed and compared to the records of 128 patients ≥60 years of age (Group ≥60). All patients were examined and treated between April 1987 and April 1994. Postoperatively, they were enrolled in a vascular laboratory surveillance program to serially monitor the status of the vascular reconstruction. Follow-up averaged more than 3 years in both groups and was available on greater than 90% of patients. Results: Patients in Group ≤50 had a higher incidence of smoking (68% versus 51%) and a lower incidence of hypertension (29% versus 50%) than patients in group ≥60 (smoking P = 0.03, hypertension P = 0.007). No other significant differences were noted among cardiovascular risk factors. Preoperative indications for surgery were similar among patients in both groups. An aortoiliac endarterectomy was more commonly used to revascularize the lower extremities in younger patients than in their older counterparts (23% versus 7%, P = 0.002). Graft revisions were more frequently necessary after aortic reconstruction in Group ≤50 than in Group ≥60 (29% versus 8%, P = 0.0003); however patency rates computed by life table analysis were not significantly different. The primary patencies for Group ≤50 and Group ≥60 at 5 years were 64% and 67%, respectively; their secondary patency rates at 5 years were 84% and 89%, respectively. No significant difference was found in major limb amputation (8% in Group ≤50 versus 5% in Group ≥60, P = 0.46). We conclude that aortoiliac reconstruction for occlusive disease can be performed with similar secondary patency and amputation rates in young and old patients. However, close postoperative surveillance and frequent surgical revision are necessary to maintain patency and minimize amputation.