Author(s): Iida O, Soga Y, Hirano K, Kawasaki D, Suzuki K,
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Abstract OBJECTIVES: To assess and risk stratify midterm clinical outcomes after endovascular therapy (EVT) by angioplasty only of patients with critical limb ischaemia (CLI) due to isolated below-the-knee (BTK) lesions. DESIGN: Retrospective multicenter study. MATERIALS AND METHODS: Between March 2004 and October 2010, 465 limbs (Rutherford 5 and 6: 79\%) from 406 patients were studied. Overall survival, limb salvage, and re-intervention were examined out to 3 years by the Kaplan-Meier method and the log-rank test. Their independent predictors and risk stratification were analysed. RESULTS: Patient age was 71 ± 11 yrs, with 69\% diabetics and 60\% on dialysis. Mean follow-up was 18 ± 15 months. Overall survival was 76 ± 2 and 57 ± 4\% at 1 and 3, years, respectively. Survival predictors were body mass index <18, non-ambulatory status and ejection fraction <45\%. Two-year limb salvage rate was 80 ± 2\%. Factors associated with major amputation were ulcers (Rutherford 6), diabetes mellitus, C-reactive protein>5 mg/dL, and age < 60 years. Two-year freedom from re-intervention was 66 ± 3\%; age and below-the-ankle runoff number after angioplasty was negatively associated with re-intervention. CONCLUSIONS: Despite relatively high mortality and re-intervention rates, limb salvage rate was acceptable after EVT for CLI patients with isolated BTK lesions. Risk stratification allows occurrence estimation for each end point. Copyright © 2011 European Society for Vascular Surgery. All rights reserved.
This article was published in Eur J Vasc Endovasc Surg
and referenced in JBR Journal of Clinical Diagnosis and Research