Abstract: Abstract Objective: To explore the relative factors of restenosis and occlusion after artificially grafting femoropopliteal bypass on chronic ischemia of low extremities in different postoperation time. Methods: A total of selected 115 cases with peripheral artery occlusive disease(PAOD), who were treated in our hospital from Mar. 2006 to Mar. 2008, were divided into occlusive group and patent group according to their grafting patency in different postoperation time. Complications and run-off way were evaluated. Results: Diabetes mellitus were significantly higher in the occlusive group at 24 months(57.1%, P<0.05). The rates of the patients who had only one run-off artery which wasn’t serious stenosis or occlusive were 38% in occlusive group and were 19.2% in patent group at 24 months. There were significant difference between 2 groups(P<0.05). Conclusion: Diabetes mellitus and only one run-off artery which wasn’t serious stenosis or occlusive maybe the major high risk factors that lead to long-term artificial graft obliteration．

Key words: arteial occlusive disease, Graft occlusion, vascular, diabetes mellitus, run-off artery