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Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) Score
Feb 18, 2018
•
Mark Morgan
categories:
Infectious Disease
Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) Score Patient with cellulitis or abscess
less than 150 mg per L (1,430 nmol per L) (0 points)
greater than or equal to 150 mg per L (1,430 nmol per L) (4 points)
<-- C-reactive protein
less than or equal to 1.6 mg per dL (141 μmol per L) (0 points)
greater than 1.6 mg per dL (141 μmol per L) (2 points)
<-- Creatinine
less than or equal to 180 mg per dL (10 mmol per L) (0 points)
greater than 180 mg per dL (10 mmol per L) (1 point)
<-- Glucose
greater than 13.5 g per dL (135 g per L) (0 points)
11 to 13.5 g per dL (110 to 135 g per L) (1 point)
less than 11 g per dL (110 g per L) (2 points)
<-- Hemoglobin
greater than or equal to 135 mEq per L (135 mmol per L) (0 points)
less than 135 mEq per L (135 mmol per L) (2 points)
<-- Sodium
less than 15,000 per mm3 (15.0 × 10^9 per L) (0 point)
15,000 to 25,000 per mm3 (15.0 × 10^9 to 25.0 × 10^9 per L) (1 point)
greater than 25,000 per mm3 (25.0 x 10^9 per L) (2 points)
<-- Total white blood cells
Score -->
number
score1=(Q1)+(Q2)+(Q3)+(Q4)+(Q5)+(Q6)
out of 13
Recommendation -->
interpretation
score2=(Q1)+(Q2)+(Q3)+(Q4)+(Q5)+(Q6);score2>7?'Highly predictive of necrotizing fasciitis - patient should be carefully evaluated for necrotizing fasciitis':score2>5?'Indicative of necrotizing fasciitis - patient should be carefully evaluated for necrotizing fasciitis':'Less likely to indicate necrotizing fasciitis'
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References
#1
Ramakrishnan K, Salinas RC, Agudelo Higuita NI. Skin and Soft Tissue Infections. Am Fam Physician. 2015 Sep 15;92(6):474-83.
#2
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 Jul;32(7):1535-41.
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