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Article Abstract
Background: Many chronic nonhealing diabetic foot ulcers (DFUs) with increased rates of amputation are frequently associated with fungal infections.
Purpose: To evaluate the prevalence, profile, and risk factors of developing a fungal infection in patients with DFU.
Methods: This prospective observational study was carried out from October 2018 to July 2020. All adult patients with DFUs admitted to the surgery ward were recruited. Patients on antifungal therapy or who received such therapy within 6 weeks prior to admission were excluded. Three deep tissue samples were sent for bacterial culture, fungal culture, and histopathological examination of fungal elements.
Results: A total of 251 patients were enrolled in the study. Of the 23.3% of patients with positive fungal growth (n = 47/202), 2% (n = 4/202) had pure fungal growth and 21.3% (n = 43/202) had mixed growth with bacteria in their ulcers (ie, non-contaminated samples). A significant association was found between wound grade (P = .027), ulcer duration (P = .028), and positive fungal growth in DFUs.
Conclusions: In this study, the prevalence of fungal infection in DFUs was 23.3%; Candida tropicalis (27.08%) was the most common isolate, followed by C. albicans (20.83%). The rate of fungal infections was high in patients with mild diabetic foot infection or DFU of 7 to 14 days' duration.
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