Predicting Mortality in Fournier Gangrene and Validating the Fournier Gangrene Severity Index: Our Experience with 50 Patients in a Tertiary Care Center in India.

OBJECTIVE

To identify factors that dictate morbidity and mortality in patients with Fournier's Gangrene and validate the Fournier gangrene severity index (FGSI).

MATERIALS AND METHODS

We prospectively studied 50 patients with FG from January 2016 to December 2016 pertaining to their presenting signs, intraoperative findings, and postoperative wound management and outcome. We also checked the power of the FGSI to predict the outcome of the patients in terms of mortality. Receiver operating characteristic curve was used to determine the optimum cutoff of FGSI score to predict mortality. Principle component analysis was performed to check for the possibility of reduction in the number of factors included in the FGSI.

RESULTS

The mean age at presentation was 53 ± 16 years with a mortality rate of 24%. Factors associated with mortality were increasing age (p = 0.0001), presence of diabetes (p = 0.002), bed-ridden status (p = 0.001), alcoholic liver disease (p = 0.005), altered international normalized ratio (p > 0.005), late presentation (p = 0.001), and a FGSI score of > 9 at admission (p = 0.004). The mean FGSI score among survivors was 4.39 ± 3.80 compared to 14.22 ± 3.93 among those who died. The area under the curve FGSI score to predict mortality at a cutoff of 9 was 0.961 (95% CI 0.910-1.000).

CONCLUSION

Increasing age, diabetes, alcoholic liver disease, bed-ridden status, delayed hospital presentation, and an altered international normalized ratio at presentation are associated with higher mortality in FG. The FGSI at admission should be used to identify patients with serious prognosis requiring intensive care.