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Clinical Outcomes after Revascularization in Patients with Chronic Limb-Threatening Ischemia

Akio Kodama1

  • 1Department of Vascular Surgery, Aichi Medical University, Nagakute, Aichi, Japan.

Annals of Vascular Diseases
|January 29, 2025
PubMed

Insights

Tailored revascularization strategies improve outcomes for Japanese patients with chronic limb-threatening ischemia (CLTI). Patient factors and surgical approach significantly influence amputation-free survival and quality of life.

Area of Science:

  • Vascular Surgery
  • Peripheral Artery Disease Research
  • Clinical Outcomes Analysis

Background:

  • Chronic limb-threatening ischemia (CLTI) is an advanced stage of peripheral artery disease with high mortality and amputation risks.
  • Existing management strategies and Western trial data may not fully apply to diverse populations, including Japanese patients, due to demographic and clinical differences.
  • Optimizing CLTI treatment requires understanding population-specific outcomes and tailoring interventions.

Purpose of the Study:

  • To examine the outcomes of revascularization in Japanese patients with CLTI.
  • To evaluate the applicability of existing staging systems (e.g., Global Limb Anatomic Staging System) in this population.
  • To emphasize the benefits of tailored management strategies for CLTI.

Main Methods:

  • Post-hoc analysis of the BASIL-1 trial data to assess the Global Limb Anatomic Staging System.
  • Analysis of the SPINACH registry data comparing endovascular therapy (EVT) and bypass surgery (BS).
  • Review of retrospective studies on pedal branch artery bypass, functional independence, and zinc supplementation.

Main Results:

  • The Global Limb Anatomic Staging System predicted EVT outcomes but not bypass surgery outcomes in CLTI.
  • Comparable 3-year amputation-free survival rates were observed between EVT and BS in the SPINACH registry.
  • Revascularization improved quality of life, though benefits diminished over time, particularly in non-ambulatory, elderly, or dialysis-dependent patients. Surgical reconstruction better preserved ambulation.

Conclusions:

  • Tailored revascularization approaches are crucial for improving outcomes in Japanese CLTI patients.
  • Patient-specific factors significantly impact the success of revascularization.
  • Further research into innovative strategies, including pedal bypass and zinc supplementation, is warranted to address persistent CLTI challenges.

Keywords:
GLASSchronic limb-threatening ischemiaquality of liferevascularization

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