Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) Score

Infectious Disease
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Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) Score Patient with cellulitis or abscess [select name="Q1" value="less than 150 mg per L (1,430 nmol per L) (0 points)=0|greater than or equal to 150 mg per L (1,430 nmol per L) (4 points)=4"] <-- C-reactive protein
[select name="Q2" value="less than or equal to 1.6 mg per dL (141 μmol per L) (0 points)=0|greater than 1.6 mg per dL (141 μmol per L) (2 points)=2"] <-- Creatinine
[select name="Q3" value="less than or equal to 180 mg per dL (10 mmol per L) (0 points)=0|greater than 180 mg per dL (10 mmol per L) (1 point)=1"] <-- Glucose
[select name="Q4" value="greater than 13.5 g per dL (135 g per L) (0 points)=0|11 to 13.5 g per dL (110 to 135 g per L) (1 point)=1|less than 11 g per dL (110 g per L) (2 points)=2"] <-- Hemoglobin
[select name="Q5" value="greater than or equal to 135 mEq per L (135 mmol per L) (0 points)=0|less than 135 mEq per L (135 mmol per L) (2 points)=2"] <-- Sodium
[select name="Q6" value="less than 15,000 per mm3 (15.0 × 10^9 per L) (0 point)=0|15,000 to 25,000 per mm3 (15.0 × 10^9 to 25.0 × 10^9 per L) (1 point)=1|greater than 25,000 per mm3 (25.0 x 10^9 per L) (2 points)=2"] <-- Total white blood cells
Score --> [calc value="score1=(Q1)+(Q2)+(Q3)+(Q4)+(Q5)+(Q6)" memo="number"] out of 13
Recommendation --> [calc value="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'" memo="interpretation"]
[checkbox memo="display/hide references" name="footnotes" value=""][conditional field="footnotes" condition="(footnotes).isNot('')"]
References
[link url="https://www.ncbi.nlm.nih.gov/pubmed/26371732" memo="#1"] Ramakrishnan K, Salinas RC, Agudelo Higuita NI. Skin and Soft Tissue Infections. Am Fam Physician. 2015 Sep 15;92(6):474-83.
[link url="https://www.ncbi.nlm.nih.gov/pubmed/15241098" memo="#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. [/conditional]
Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) Score Patient with cellulitis or abscess <-- C-reactive protein
<-- Creatinine
<-- Glucose
<-- Hemoglobin
<-- Sodium
<-- Total white blood cells
Score --> numberscore1=(Q1)+(Q2)+(Q3)+(Q4)+(Q5)+(Q6) out of 13
Recommendation --> interpretationscore2=(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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