October 13, 2025

The Lrinec Score – To Predict Course and Prognosis of Necrotizing Fasciitis

Key Points

Initial LRINEC scores predict mortality, with a score greater than 6.5 indicating high risk in necrotizing fasciitis patients.
A significant decrease in LRINEC scores was observed following surgical debridement, correlating with improved outcomes.
In a cohort of 93 patients, the study reported a 20.4% mortality rate associated with necrotizing fasciitis over six months.
Findings support the LRINEC score as a useful prognostic tool, though it should not be solely relied upon for diagnosis.

Abstract

Necrotizing fasciitis (NF) is a severe, rapidly progressing infection characterized by necrosis of subcutaneous and deep fascial tissues, leading to signicant morbidity and high mortality rates. This study assesses the Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) score as a predictor of mortality and outcome in patients with NF. Methods: Conducted over six months, this prospective observational study evaluated 93 patients diagnosed with NF, analyzing LRINEC scores at admission and post-debridement to determine their correlation with mortality and clinical outcomes. Result: The overall lethality during our study was 19 out of 93 (20.4%). A highly signicant LRINEC decrease was found for serial debridement. Acut off value of >6.5 (7 LRINEC points) was found to be a predictor of mortality in patients with necrotising fasciitis. Conclusion: The LRINEC signicantly decreases after surgical debridement. An initial LRINEC equal or greater than seven is an independent prognostic marker for lethality and can help to identify high-risk patients. The results emphasize the value of the LRINEC score as a prognostic tool while also highlighting its limitations as a standalone diagnostic measure.

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