3:36 PM Abstract No. 155 Bare-metal, covered, and drug-eluting stent patency following recanalization of femoropopliteal chronic total occlusions

Abstract

transcatheter aortic valve repair, open aneurysm repair, and endovascular aneurysm repair. The current study evaluated multiple variables including core muscle size, BMI, age, and Charlson comorbidity index (CCI) as predictors of all-cause mortality after EVAR. Materials: An IRB approved single-center retrospective study of patients with a history of EVAR between 2010 and 2016 was performed. After excluding patients without preprocedure crosssectional imaging and those incomplete medical records, a total of 407 patients were included. The total psoas muscle area (TPMA) was measured in cross-section at the superior endplate of L4. Kaplan-Meier curves were constructed for each of the candidate variables. Univariate and multivariate analyses were performed to determine which variables were significant predictors of mortality. Results: Mean follow-up time was 38.7 months (SD 33.5 months). Following endovascular repair, there was a significant difference (p<0.002) in mean survival time for patients with total psoas muscle area smaller than 1422 mm 2 (the lowest quartile); 63.7 months (SE 4.4 months) compared to 90.3 months (SE 4.0 months) for patients with TPMA greater than 1422 mm 2. The mean survival time for patients who were underweight was 38.1 months (SE 14.8 months); significantly different from normal, overweight, and obese patients, p<0.015. Multivariate analysis demonstrated that total psoas muscle area and BMI were significant predictors of mortality after EVAR (p<0.006 and p<0.012, respectively). Other variables such as age, gender, and CCI were not significant. Conclusions: Significant predictors of all-cause mortality after EVAR included BMI and TPMA. Age, gender, and Charlson comorbidity index were not significant predictors in the multivariate model. Therefore, inclusion of BMI and core muscle size in risk stratification tools may identify truly frail patients.