lrinec_score_necrotizing_infection: LRINEC Score for Necrotizing Soft Tissue Infection

In cliot: Clinical Indices and Outcomes Tools

LRINEC Score for Necrotizing Soft Tissue Infection

Description

Calculates the Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) score. This tool uses six independent laboratory predictors (CRP, WBC, Hemoglobin, Sodium, Creatinine, Glucose) to distinguish necrotizing soft tissue infections from severe cellulitis or abscesses.

Usage

lrinec_score_necrotizing_infection(crp_mg_dl, wbc_count, hemoglobin_g_dl,
                                   sodium, creatinine, glucose_mg_dl,
                                   creatinine_units = "mg/dL",
                                   glucose_units = "mg/dL")

Arguments

crp_mg_dl	Numeric. C-Reactive Protein level in mg/dL. (>= 15 mg/dL adds 4 points).
wbc_count	Numeric. White Blood Cell count in x10^3/uL (or x10^9/L). (<15: 0, 15-25: 1, >25: 2).
hemoglobin_g_dl	Numeric. Hemoglobin level in g/dL. (>13.5: 0, 11-13.5: 1, <11: 2).
sodium	Numeric. Serum Sodium level in mEq/L. (<135: 2 pts).
creatinine	Numeric. Serum Creatinine level. (>1.6 mg/dL adds 2 pts).
glucose_mg_dl	Numeric. Serum Glucose level. (>180 mg/dL adds 1 pt).
creatinine_units	String. Units for creatinine. "mg/dL" (default) or "micromol/L".
glucose_units	String. Units for glucose. "mg/dL" (default) or "mmol/L".

Value

A list containing:

LRINEC_Score	The calculated score (Range 0-13).
Risk_Category	Classification (Low <=5, Intermediate 6-7, High >=8).
Est_Probability_NSTI	Estimated probability of Necrotizing Soft Tissue Infection.

References

Wong CH, Khin LW, Heng KS, Tan KC, Low CO. The LRINEC (Laboratory Risk Indicator for Necrotizing Fasciitis) score: a tool for distinguishing necrotizing fasciitis from other soft tissue infections. Crit Care Med. 2004;32(7):1535-1541. doi:10.1097/01.ccm.0000129486.35458.7d

Examples

# Example 1: High Risk
# CRP 20 (+4), WBC 28 (+2), Hb 10 (+2), Na 130 (+2), Cr 1.0, Gluc 200 (+1)
# Score = 11
lrinec_score_necrotizing_infection(20, 28, 10, 130, 1.0, 200)

# Example 2: Low Risk
# CRP 5 (0), WBC 12 (0), Hb 14 (0), Na 140 (0), Cr 0.9, Gluc 100 (0)
# Score = 0
lrinec_score_necrotizing_infection(5, 12, 14, 140, 0.9, 100)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.