Wound, Ischemia, foot Infection (WIfI) Classification
Assesses severity of limb threat in patients with lower extremity disease.
Advice
- Use the score to complement, not replace, clinical judgment; its correlation with healing time and amputation risk supports counseling and shared decision-making.
- Schedule close follow-up and repeat calculation regularly to document trajectory.
- Higher stages indicate an increasingly urgent need for revascularization.
Management
Society guidelines integrate both the overall stage and the individual W, I, fI grades; consult local protocols (e.g., 2019 Global Vascular Guidelines) for more detailed recommendations.
Below is a simplified summary of key recommendations:
- Stage 1 (low risk):
- Rarely requires revascularization.
- Optimize risk factors (glycemic control, smoking cessation).
- Initiate off-loading and advanced wound care.
- Monitor for improvement, and reassess if wound healing stalls or worsens.
- Rarely requires revascularization.
- Stage 2–3 (intermediate risk):
- Revascularization may be warranted when major tissue loss, failed healing, or significant perfusion deficits are present.
- Obtain vascular imaging if the patient is a candidate for revascularization.
- Revascularization may be warranted when major tissue loss, failed healing, or significant perfusion deficits are present.
- Stage 4 (high risk):
- Limb is at high risk for amputation.
- Urgently evaluate for and pursue revascularization.
- Limb is at high risk for amputation.