• J. Vasc. Surg. · Jun 2018

    Use of the Wound, Ischemia, foot Infection classification system in hemodialysis patients after endovascular treatment for critical limb ischemia.

    • Takahiro Tokuda, Keisuke Hirano, Yasunari Sakamoto, Shisuke Mori, Norihiro Kobayashi, Motoharu Araki, Masahiro Yamawaki, and Yoshiaki Ito.
    • Department of Cardiovascular Medicine, Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan. Electronic address: tkhrtkd@yahoo.co.jp.
    • J. Vasc. Surg. 2018 Jun 1; 67 (6): 1762-1768.

    ObjectiveThe Wound, Ischemia, foot Infection (WIfI) classification system is used to predict the amputation risk in patients with critical limb ischemia (CLI). The validity of the WIfI classification system for hemodialysis (HD) patients with CLI is still unknown. This single-center study evaluated the prognostic value of WIfI stages in HD patients with CLI who had been treated with endovascular therapy (EVT).MethodsA retrospective analysis was performed of collected data on CLI patients treated with EVT between April 2007 and December 2015. All patients were classified according to their wound status, ischemia index, and extent of foot infection into the following four groups: very low risk, low risk, moderate risk, and high risk. Comorbidities and vascular lesions in each group were analyzed. The prognostic value of the WIfI classification was analyzed on the basis of the wound healing rate and amputation-free survival at 1 year.ResultsThis study included 163 consecutive CLI patients who underwent HD and successful endovascular intervention. The rate of the high-risk group (36%) was the highest among the four groups, and the proportions of very-low-risk, low-risk, and moderate-risk patients were 10%, 18%, and 34%, respectively. The mean follow-up duration was 784 ± 650 days. The wound healing rates at 1 year were 92%, 70%, 75%, and 42% in the very-low-risk, low-risk, moderate-risk, and high-risk groups, respectively (P <.01). A similar trend was observed for the 1-year amputation-free survival among the groups (76%, 58%, 61%, and 46%, respectively; P = .02).ConclusionsThe WIfI classification system predicted the wound healing and amputation risks in a highly selected group of HD patients with CLI treated with EVT, with a statistically significant difference between high-risk patients and other patients.Copyright © 2017 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.

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