Clinical efficacy of sequential bypass in lower extremity arteriosclerosis obliterans

BACKGROUND: The aim of this study was to explore the clinical nature of sequential bypass in lower extremity arteriosclerosis obliterans (ASO) with the degree of lesion above Trans-Atlantic Inter-Society Consensus (TASC) D grade.METHODS: The efficacy of 23 patients who suffered from severe lower extremity ASO was studied by mixed study of a prospective cohort.RESULTS: The Ankle Brachial Index (ABI) of the patients before the operation was 0.35±0.017 and increased to 0.64±0.016 after the operation. The results of the ABI before and after the operation were statistically significant. There were 3 patients in Fontaine stage II, 11 patients in Fontaine stage III and 9 patients in Fontaine stage IV before the operation. After the operation, there were 19 patients asymptomatic in Fontaine stage I, and 4 patients were asymptomatic in Fontaine stage II. A total of 3-61 months of follow-up time and an average follow-up were 49 months. The limb salvage rates were 86.96%, 69.57%, 69.57% and 56.52% at 1, 2, 3 and 5 years after the operation, respectively.CONCLUSIONS: Sequential bypass was effective in the treatment of lower extremity arteriosclerosis obliterans of TASC D grade, having good medium-term and long-term results.