부산대학교 도서관

OBJECTIVES:: METHODS:: RESULTS:: The interventions consisted of below-knee bypasses in 132 cases in group 1 (73%) and in 45 cases in group 2 (33%; P < .001); 48 patients in group 1 (27%) and 88 patients in group 2 (67%; P < .001) had distal tibial anastomosis. Patients in group 1 had more frequently adjunctive procedures performed at distal anastomotic sites to improve run-off status. Postoperative and long-term medical treatment consisted of single antiplatelet therapy in 93 cases (52%) in group 1 and in 64 cases (48%, P = ns) in group 2, of double antiplatelet therapy in 18 cases (10%) in group 1 and in four cases (3%; P = .05) in group 2 and of oral anticoagulants in 69 patients in group 1 (38%) and in 65 (49%; P = .02) in group 2. Mean duration of follow-up was 28.3 ± 21.4 months; 308 patients (98%) had at least one postoperative clinical and ultrasonographic examination and 228 (72%) reached at least a 1-year follow-up. Estimated 48-month survival rates were 76.6% in group 1 and 72.7% in group 2 (P = > .9, log-rank 0.08). Primary patency rate at 48 months was significantly better in group 2 (63.5%) than in group 1 (46.3%; P = .03, log-rank 4.1). Assisted primary patency rates at 48 months were 47.3% (SE 0.05) in group 1 and 69% (SE 0.05) in group 2 (P = .01, log-rank 6.3). The rates of secondary patency at 48 months were 57.5% in group 1 and 69.6% in group 2 (P = .1, log-rank 2.3); the corresponding values in terms of limb salvage and amputation free-survival rates were 75.4% and 82.4% (P = .3, log-rank 1), and 59.9% and 64.4% (P = .3, log-rank 0.9), respectively. CONCLUSIONS