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2026, Number 2

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Cir Gen 2026; 48 (2)

Wood’s light vs. wound culture in diabetic foot ulcer infections: a diagnostic test study

Veles MFA, Rivera PMÁ, Arenas SD

Language: Spanish
References: 18
Page: 71-78
PDF size: 1262.50 Kb.


ABSTRACT

Introduction: diabetes is one of the most prevalent chronic diseases worldwide. Diabetic foot ulcers and their infection are among the most feared complications, associated with a high risk of amputation. Early diagnosis is essential to prevent this. The current gold standard is wound culture. Among alternative diagnostic methods, Wood’s light was studied to determine its sensitivity and specificity for detecting diabetic foot ulcer infection. Objective: to determine the sensitivity and specificity of Wood’s light for diagnosing diabetic foot ulcer infection, compared with culture and biopsy. Material and methods: a prospective, analytical, observational, cross-sectional, epidemiological diagnostic test study was conducted. At Regional Hospital No. 1 in Ciudad Obregón, Sonora, patients with diabetic foot ulcers were examined using a Wood’s light and wound biopsy for culture. Both methods were compared in terms of sensitivity, specificity, positive predictive value, and negative predictive value. Results: we found that the Wood’s light had a sensitivity of 93.8%, specificity of 85.7%, positive predictive value of 97.8%, and negative predictive value of 66%. Conclusions: the Wood’s light is an effective method for the diagnosis of wound infection in diabetic foot ulcers.


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