Mortality prognostic factors in Fournier gangreneBackground: Fournier gangrene corresponds to a necrotizing fasciitis that affects the genital and perianal region. It has a high mortality and a special score, FGSI (Fournier Gangrene Severity Index Score), which includes nine laboratory and clinical parameters was devised to evaluate its prognosis. Aim: To determine predictors of mortality among patients with Fournier gangrene. Material and Methods: Prospective study of 31 patients aged 58 ± 13 years (25 males) with Fournier gangrene. The inclusion criteria was the presence of perianal infl ammation with redness, pain swelling and appearance of a rapidly progressing necrosis with fever, tachycardia and leukocytosis. Results: Eight patients died. Length of hospital stay ranged from 1 to 187 days and the number of required surgical procedures ranged from 1 to 17. The FGSI score was 7.1 ± 4. These three factors had a prognostic value for mortality. Conclusions: Among patients with Fournier gangrene, length of hospital stay, number of required surgical procedures and FGSI are predictive of mortality