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Background and purpose Infrainguinal arterial reconstruction increases limb salvage rates, however, the fac- tors that predict time to graft failure remain ill-defined. The aim of this study was to define such predictors. Methods A retrospective analysis of infrainguinal arterial reconstructions performed for symptomatic pe- ripheral arterial disease refractory to medical/interventional therapies over a 6 year period was performed. Demographics and adverse outcomes were analysed and statistical significance was determined using Chi-squared analysis, the Student t test and the Wilcoxon signed-rank test. Main findings 170 procedures were analysed. The male to female ratio was 4:3. The median age was 70.1 years. The post-operative com- plication rate was 12%. On univariate analysis, female gender, the use of a synthetic graft, and the presence of critical ischaemia at the time of surgery were predictive of time to graft failure (ρ ≤ 0.05, ρ ≤ 0.03, ρ ≤ 0.02 respectively). On multivariate analysis, the 3 most significant predictors were the occurrence of a post-operative complication, female gender and a high ASA grade. The presence of diabetes mellitus and smoking did not adversely affect graft outcome, (ρ ≤ 0.23, ρ ≤ 0.20 respectively). Conclusion This study suggests that female gender adversely affects graft patency while a history of smoking and the presence of diabetes mellitus do not. Our findings also suggest that the occurrence of a post-operative complication, and a high ASA grade at time of surgery are additional important predictors of early and late graft failure

Predictors of Time to Graft Failure Following Infrainguinal Arterial Reconstruction