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WIfI classification: the Society for Vascular Surgery lower extremity threatened limb classification system, a

Lorena de Oliveira Cerqueira1, Eliud Garcia Duarte1,2,3,4, André Luis de Souza Barros1,2

  • 1Universidade Vila Velha - UVV, Cirurgia Vascular, Vila Velha, ES, Brasil.

Jornal Vascular Brasileiro
|June 28, 2021
PubMed

Insights

The new Wound, Ischemia, and foot Infection (WIfI) classification system aids in assessing threatened lower limb risk. Validation studies confirm its effectiveness in predicting amputation and guiding limb salvage strategies.

Area of Science:

  • Vascular Surgery
  • Lower Limb Revascularization
  • Diabetic Foot Complications

Background:

  • The Society for Vascular Surgery developed the Wound, Ischemia, and foot Infection (WIfI) classification.
  • This system addresses threatened lower limb risk, including complex diabetic cases previously excluded from critical limb ischemia concepts.
  • It aims for accurate, early risk stratification to guide clinical management and therapy comparison.

Purpose of the Study:

  • To synthesize key findings on the WIfI classification from existing scientific literature.
  • To consolidate evidence supporting the WIfI system's utility in managing threatened lower limbs.
  • To provide a comprehensive overview of WIfI classification research.

Main Methods:

  • Literature review of studies validating the WIfI classification system.
  • Analysis of research focusing on WIfI's association with limb salvage outcomes.
  • Synthesis of data from multiple validation studies.

Main Results:

  • WIfI classification is strongly associated with amputation rates and amputation-free survival.
  • The system effectively predicts the need for reintervention and stenosis (RAS) events.
  • Studies demonstrate WIfI's utility in predicting wound healing outcomes.

Conclusions:

  • The WIfI classification system is a validated tool for risk stratification in threatened lower limbs.
  • It aids in predicting amputation risk and guiding limb salvage interventions.
  • The WIfI system offers a standardized approach for managing complex lower limb ischemia, including in diabetic patients.

Keywords:
amputationdiabetic footfoot ulcerinfectionischemiamortality

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