Abstract
Forty-two anatomical bypass operations (AB) land 48 extraanatomical bypass operations (EAB) performed for aorto-iliac occlusive disease during the last 6 years were compared for long-term results.
(1) Mean age of the patients at the operation were 62.2 years in group AB and 74.1 in group EAB (p<0.001). (2) Patients with Stage III and/or IV after Fontaine represented 19% and 52.1% respectively (p<0.005). (3) Within the first postoperative year, cumulative graft patency in group AB was better than that in group EAB (p<0.05). On the 5th year, however, no difference of the patency was found between the 2 groups (AB: 92.7%, EAB: 80.9%). (4) cumulative 5-year survival rate after surgery were 80.7% in group AB and 38.6% in the other (p<0.05). Graft patency exceeded survival rate at every interval. (5) All thrombosed grafts of 28 femorofemoral bypasses were not externally supported.
It is concluded that for patients older than 70 years of age, extraanatomical bypass operation using externally supported Dacron graft can be performed actively to improve quality of life.
