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Role of procalcitonin in infected diabetic foot ulcer.
Diabetes Research and Clinical Practice 2017 June
AIMS: Procalcitonin (PCT) has been recently accepted as a marker for diagnosing infection. The aim of the present study was to determine whether PCT levels are associated with infection severity of diabetic foot ulcers and whether PCT levels would be helpful to differentiate infected diabetic foot ulcer (IDFU) from IDFU associated with other infectious diseases (IDFU+O).
METHODS: We prospectively included 123 diabetic patients hospitalized for IDFU. Infection severity of diabetic foot ulcers was graded according to the Infectious Diseases Society of America-International Working Group on the Diabetic Foot clinical classification of diabetic foot infection. Chest radiograph, urinalysis, urine microscopy, urine culture, and blood cultures (if fever was present) were performed for all patients to diagnose other infectious diseases. Laboratory parameters were measured from blood venous samples.
RESULTS: PCT (Spearman's ρ=0.338, P<0.001) and C-reactive protein (Spearman's ρ=0.477, P<0.001) levels were significantly associated with infection severity of diabetic foot ulcers. However, only PCT levels could differentiate patients with associated infectious diseases from patients with no concomitant infection (area under the receiver-operator characteristic curve 0.869, P<0.0001; cut-off value 0.59; sensitivity 94.7; specificity 88.5).
CONCLUSION: PCT and CRP levels positively correlated with infection severity of diabetic foot ulcers and PCT levels>0.59ng/mL in patients with IDFU may be associated with other systemic bacterial infection.
METHODS: We prospectively included 123 diabetic patients hospitalized for IDFU. Infection severity of diabetic foot ulcers was graded according to the Infectious Diseases Society of America-International Working Group on the Diabetic Foot clinical classification of diabetic foot infection. Chest radiograph, urinalysis, urine microscopy, urine culture, and blood cultures (if fever was present) were performed for all patients to diagnose other infectious diseases. Laboratory parameters were measured from blood venous samples.
RESULTS: PCT (Spearman's ρ=0.338, P<0.001) and C-reactive protein (Spearman's ρ=0.477, P<0.001) levels were significantly associated with infection severity of diabetic foot ulcers. However, only PCT levels could differentiate patients with associated infectious diseases from patients with no concomitant infection (area under the receiver-operator characteristic curve 0.869, P<0.0001; cut-off value 0.59; sensitivity 94.7; specificity 88.5).
CONCLUSION: PCT and CRP levels positively correlated with infection severity of diabetic foot ulcers and PCT levels>0.59ng/mL in patients with IDFU may be associated with other systemic bacterial infection.
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