cliot (version 1.0.0)

lrinec_score_necrotizing_infection: 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")

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.

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".

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)