Abstract
To present a propensity score matching analysis comparing the 1-year outcomes of de novo femoropopliteal lesions treated with drug-eluting stents (DES) or bare nitinol stents (BNS). A retrospective review was conducted of 452 limbs in 389 patients (mean age 74±8 years; 284 men) treated with DES implantation and 1808 limbs in 1441 patients (mean age 72±9 years; 1023 men) implanted with BNS for de novo femoropopliteal lesions. One-year follow-up data were available on all patients. The primary endpoint was 12-month restenosis assessed by duplex ultrasonography or follow-up angiography within ±2 months. Secondary endpoint was major adverse limb events (MALE) including major amputation, any reintervention, and restenosis. The BNS group was more likely to have current smoking, chronic total occlusion, and poor below-the-knee runoff. The stratification analysis demonstrated that diabetes mellitus (DM) and reference vessel diameter (RVD) had a significant interaction on the association of DES vs BNS implantation with restenosis (interaction p<0.05). Thus, the population was stratified into 4 subgroups (1: -DM, RVD ≥5 mm, 2: +DM, RVD ≥5 mm, 3: -DM, RVD <5 mm, and 4: +DM, RVD <5 mm); the RVD threshold was empirically determined. There w...Continue Reading
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