Grant W Reed1, Laura Young1, Imad Bagh1, Michael Maier1, Mehdi H Shishehbor2. 1. Heart and Vascular Institute, Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio. 2. Heart and Vascular Institute, Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio. Electronic address: shishem@gmail.com.
Abstract
OBJECTIVES: This study sought to determine the relationship between change in ankle-brachial index (ABI) and toe-brachial index (TBI) and outcomes following revascularization of critical limb ischemia (CLI). BACKGROUND: An increase in ABI of 0.15 after revascularization for peripheral artery disease with claudication is considered significant. However, the utility of using change in ABI or TBI to predict outcomes in patients with CLI is unproven. METHODS: This was an observational study of 218 patients with Rutherford class V or VI CLI that underwent endovascular therapy. Receiver-operating characteristic curve analysis determined cutpoints in post-procedure ABI and TBI, as well as change in these values for endpoints of wound healing, major adverse limb events (MALE), and repeat revascularization. RESULTS: After multivariable Cox proportional hazards analysis adjusting for age, diabetes, glomerular filtration rate, smoking, Rutherford class, and baseline ABI or TBI, neither static post-procedure ABI nor post-procedure TBI were associated with wound healing (hazard ratio [HR]: 1.21; 95% confidence interval [CI]: 0.77 to 1.89; p = 0.40; HR: 1.49; 95% CI: 0.98 to 2.27; p = 0.065, respectively). However, change in ABI ≥0.23 was independently associated with wound healing (HR: 1.87; 95% CI: 1.12 to 3.15; p = 0.018) and less repeat revascularization (HR: 0.40; 95% CI: 0.19 to 0.84; p = 0.015), but not MALE. Increase in TBI ≥0.21 was independently associated with wound healing (HR: 1.63; 95% CI: 1.02 to 2.59; p = 0.039), and reduced MALE (HR: 0.27; 95% CI: 0.09 to 0.77; p = 0.014), but not repeat revascularization. CONCLUSIONS: A change in ABI and TBI from pre-procedural values provides prognostic value in determining which patients may have wound healing and reduced MALE.
OBJECTIVES: This study sought to determine the relationship between change in ankle-brachial index (ABI) and toe-brachial index (TBI) and outcomes following revascularization of critical limb ischemia (CLI). BACKGROUND: An increase in ABI of 0.15 after revascularization for peripheral artery disease with claudication is considered significant. However, the utility of using change in ABI or TBI to predict outcomes in patients with CLI is unproven. METHODS: This was an observational study of 218 patients with Rutherford class V or VI CLI that underwent endovascular therapy. Receiver-operating characteristic curve analysis determined cutpoints in post-procedure ABI and TBI, as well as change in these values for endpoints of wound healing, major adverse limb events (MALE), and repeat revascularization. RESULTS: After multivariable Cox proportional hazards analysis adjusting for age, diabetes, glomerular filtration rate, smoking, Rutherford class, and baseline ABI or TBI, neither static post-procedure ABI nor post-procedure TBI were associated with wound healing (hazard ratio [HR]: 1.21; 95% confidence interval [CI]: 0.77 to 1.89; p = 0.40; HR: 1.49; 95% CI: 0.98 to 2.27; p = 0.065, respectively). However, change in ABI ≥0.23 was independently associated with wound healing (HR: 1.87; 95% CI: 1.12 to 3.15; p = 0.018) and less repeat revascularization (HR: 0.40; 95% CI: 0.19 to 0.84; p = 0.015), but not MALE. Increase in TBI ≥0.21 was independently associated with wound healing (HR: 1.63; 95% CI: 1.02 to 2.59; p = 0.039), and reduced MALE (HR: 0.27; 95% CI: 0.09 to 0.77; p = 0.014), but not repeat revascularization. CONCLUSIONS: A change in ABI and TBI from pre-procedural values provides prognostic value in determining which patients may have wound healing and reduced MALE.
Authors: Yash Mantri; Jason Tsujimoto; Brian Donovan; Christopher C Fernandes; Pranav S Garimella; William F Penny; Caesar A Anderson; Jesse V Jokerst Journal: Wound Repair Regen Date: 2022-01-12 Impact factor: 3.617
Authors: Sanjay Misra; Mehdi H Shishehbor; Edwin A Takahashi; Herbert D Aronow; Luke P Brewster; Matthew C Bunte; Esther S H Kim; Jonathan R Lindner; Kathleen Rich Journal: Circulation Date: 2019-08-12 Impact factor: 29.690
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