Abstract 15048: Utility of New Classification Based on Clinical and Lesional Factors after Self-Expandable Nitinol Stenting in Superficial Femoral Artery
Background: The aim of this study was to investigate the predictive value of clinical classification schemes that assess primary patency after self-expandable nitinol stent (NS) in superficial femoral artery (SFA).
Methods: This study was a multicentre retrospective study of prospective database. From April 2004 to December 2009, 1001 limbs (807 patients) which underwent successful FP stenting with NS for de novo lesions were identified and analyzed. Primary patency (PP) was defined as treated vessel without restenosis (defined as >2.4 of peak systolic velocity ratio by duplex) and repeat revascularization. Six items are included in the classification: Female, Diabetes, Dialysis, CLI, Lesion length>150 mm, and Poor runoff; the FeDCLIP score. A lesion length >150 mm was scored as 2 points. The others were assigned 1 point each. The scores of 0-2, 3-4, and ≥5 points were classified as low-, moderate-, and high- risk patients, respectively. Outcome measures were PP and secondary patency (SP) and all-cause mortality in each risk group.
Results: The mean follow interval was 26.8 ± 14.6 months. PP were 85.7%, 77.3%, and 74.2% in the low risk group (LG); 71.5%, 54.7%, and 51.9% in the moderate risk group (MG); and 53.0%, 24.3%, and 20.8% in the high risk group (HG) at 1, 3, and 5 years, respectively. The SP were 94.6%, 92.3%, and 90.8% in the LG ; 89.5%, 83.1%, and 83.1% in the MG; and 82.7%, 73.1%, and 73.1% in the HG at 1, 3, and 5 years, respectively. There were significant differences in PP and SP among 3 risk groups (p<0.0001 and p<0.0001, respectively). Overall survival rates were 96.8%, 89.5%, and 81.8% in the LG ; 91.5%, 74.4%, and 68.7% in the MG; and 78.2%, 63.2%, and 48.7% in the HG at 1, 3, and 5 years, respectively. There were also significant differences in mortality (p<0.0001).
Conclusions: New classification schemes based on FeDCLIP score was useful for risk stratification in vessel patency and mortality after self-expandable NS for SFA disease.
- © 2011 by American Heart Association, Inc.