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Global Vascular Guidelines on the Management of Chronic Limb-Threatening Ischemia
Univ Calif San Francisco, Div Vasc & Endovasc Surg, 400 Parnassus Ave,Ste A581, San Francisco, CA 94143 USA.
Univ Birmingham, Dept Vasc Surg, Birmingham, W Midlands, England.
Univ Hosp Liege, Dept Biomed & Preclin Sci, Wallonia, Belgium.ORCID iD: 0000-0001-5464-5515
Advocate Lutheran Gen Hosp, Dept Surg, Niles, IL USA.
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2019 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 58, no 1, p. S1-S109Article in journal (Refereed) Published
Abstract [en]

Chronic limb-threatening ischemia (CLTI) is associated with mortality, amputation, and impaired quality of life. These Global Vascular Guidelines (GVG) are focused on definition, evaluation, and management of CLTI with the goals of improving evidence-based care and highlighting critical research needs. The term CLTI is preferred over critical limb ischemia, as the latter implies threshold values of impaired perfusion rather than a continuum. CLTI is a clinical syndrome defined by the presence of peripheral artery disease (PAD) in combination with rest pain, gangrene, or a lower limb ulceration >2 weeks duration. Venous, traumatic, embolic, and nonatherosclerotic etiologies are excluded. All patients with suspected CLTI should be referred urgently to a vascular specialist. Accurately staging the severity of limb threat is fundamental, and the Society for Vascular Surgery Threatened Limb Classification system, based on grading of Wounds, Ischemia, and foot Infection (WIfI) is endorsed. Objective hemodynamic testing, including toe pressures as the preferred measure, is required to assess CLTI. Evidence-based revascularization (EBR) hinges on three independent axes: Patient risk, Limb severity, and ANatomic complexity (PLAN). Average-risk and high-risk patients are defined by estimated procedural and 2-year all-cause mortality. The GVG proposes a new Global Anatomic Staging System (GLASS), which involves defining a preferred target artery path (TAP) and then estimating limb-based patency (LBP), resulting in three stages of complexity for intervention. The optimal revascularization strategy is also influenced by the availability of autogenous vein for open bypass surgery. Recommendations for EBR are based on best available data, pending level 1 evidence from ongoing trials. Vein bypass may be preferred for average-risk patients with advanced limb threat and high complexity disease, while those with less complex anatomy, intermediate severity limb threat, or high patient risk may be favored for endovascular intervention. All patients with CLTI should be afforded best medical therapy including the use of antithrombotic, lipid-lowering, antihypertensive, and glycemic control agents, as well as counseling on smoking cessation, diet, exercise, and preventive foot care. Following EBR, long-term limb surveillance is advised. The effectiveness of nonrevascularization therapies (eg, spinal stimulation, pneumatic compression, prostanoids, and hyperbaric oxygen) has not been established. Regenerative medicine approaches (eg, cell, gene therapies) for CLTI should be restricted to rigorously conducted randomizsed clinical trials. The GVG promotes standardization of study designs and end points for clinical trials in CLTI. The importance of multidisciplinary teams and centers of excellence for amputation prevention is stressed as a key health system initiative.

Place, publisher, year, edition, pages
Saunders Elsevier, 2019. Vol. 58, no 1, p. S1-S109
Keywords [en]
Chronic limb-threatening ischemia, Critical limb ischemia, Peripheral artery disease, Diabetes, Foot ulcer, Endovascular intervention, Bypass surgery, Practice guideline, Evidence-based medicine
National Category
Surgery
Identifiers
URN: urn:nbn:se:uu:diva-390918DOI: 10.1016/j.ejvs.2019.05.006ISI: 000473323500001PubMedID: 31182334OAI: oai:DiVA.org:uu-390918DiVA, id: diva2:1343199
Available from: 2019-08-15 Created: 2019-08-15 Last updated: 2019-08-15Bibliographically approved

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