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Prognostic factors in Fournier gangrene.

Jeong HJ, Park SC, Seo IY, Rim JS

Department of Urology, Wonkwang University College of Medicine, Iksan, Korea.

AIMS: Fournier gangrene is a rapidly progressive necrotizing fasciitis involving the genitalia. It can be treated with antibiotics and immediate debridement along with treatment of the predisposing condition. We evaluated the prognostic factors, clinical characteristics and treatment of patients of the Fournier gangrene. METHODS: The subjects were 40 male patients diagnosed with Fournier gangrene who visited Wonkwang University Hospital, Iksan, Korea between January 1991 and December 2000. Their medical records were reviewed with respect to demographics, medical history, symptoms and signs, physical examination, laboratory data, bacteriology, extent of disease, clinical course, and therapy. The extent of disease was quantified for each patient using a modification of the diagram used to assess the extent of burns. RESULTS: The average age was 55.3 years (range 29.6-92.8). Of the 40 patients, 11 died (36%) and 29 survived (64%). Anorectal infections were the underlying local disease most commonly associated with high mortality (75%). Although the most common associated illness was diabetes, it was not related to the prognosis (death rate: 20.0%). In contrast, the death rate was highest in chronic renal failure, reaching 50%. The mortality rate increased with the duration of symptoms before hospitalization. Patients with <6% surface area involvement were more likely to survive. On admission, serum blood urea nitrogen (s-BUN) and serum creatinine were significantly higher in the patients who died. CONCLUSION: Survival is associated significantly with anorectal infection, chronic renal failure, the duration of symptoms before hospitalization, the extent of gangrene, and s-BUN and creatinine level on admission.

Published 13 January 2006 in Int J Urol, 12(12): 1041-4.
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