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• In the last few years there has been a resurgence of interest in in situ saphenous vein bypass for lower extremity revascularization because of improved patency rates. We performed 28 in situ bypass operations in 26 patients with threatened limbs using the intraluminal Hall valve disrupter. Seventy-five percent of these bypasses were to tibial vessels and had a 93% early patency rate. Three late failures were salvaged before thrombosis of the bypass, resulting in a cumulative patency rate of 93% with a mean follow-up of 17 months. In situ saphenous vein bypass has become our procedure of choice for distal reconstruction in severely ischemic limbs because of improved long-term patency compared with reversed—saphenous vein bypass. (Arch Surg1985;120:933-936)

was developed from this group yielded the following independent predictors of operative groin wound infection: previous groin incision, female gender, body mass index, end-stage renal disease, malnutrition, and urgent/emergency operation status. The C index of the resulting model was 0.845 and resulted in a correct classification of 88.6% of patients. Subsequent testing in the validation group (13.9% of whom sustained an operative groin wound infection) yielded an accuracy of 86.1% for our predictive model. We therefore developed a user-friendly computer program, which will be publicly accessible, that can be used to calculate an individual patient’s risk of developing operative groin wound infection after lower extremity revascularization (Fig). Conclusions: Our study is the first known attempt to develop and internally validate a statistical model that will accurately predict those patients who are likely to sustain an operative groin wound infection after lower extremity revascularization.