SIRS Criteria: Systemic Inflammatory Response Syndrome

Input

Temperature
Heart Rate
Respiratory Rate
PaCO2
WBC
WBC Band Percent

 

Results

Important: Inputs must be complete to perform calculation.
SIRS Score

 

SIRS interpretation

Data action

     
 
Include literature references: Yes   No

Equations used


SIRSScore = TempFactor + HeartRateFactor + WBCFactor + RespFactor
 

Calculation details and variables

  • TempFactor is assigned values by this ordered logic:
    • If Temperature >38 degC, TempFactor = 1
    • Else if Temperature ≥36 degC, TempFactor = 0
    • Else TempFactor = 1.
  • HeartRateFactor is assigned values by this ordered logic:
    • If Heart Rate >90 beats/min, HeartRateFactor = 1
    • Else HeartRateFactor = 0.
  • The RespFactor is set to 1 when the RespiratoryRate is >20 breaths/min or the PaCO2 is <32 mmHg. Otherwise the RespFactor is set to 0.
  • The WBCFactor is set to 1 if the WBC is <4,000 #/microL, the WBC >12,000 #/microL, or the WBCBandPercent is >10%. Otherwise the WBCFactor is set to 0.

References

  1. Bone RC, Balk RA, Cerra FB, et al. Definitions for sepsis and organ failure and guidelines for the use of innovative therapies in sepsis. Chest. 1992 Jun;101(6):1644-55. PubMed ID: 1303622 PubMedLink

Associated Medical Subject Headings [MeSH]


Critical Care,   Humans,   Medical,   Multiple Organ Failure,   Pulmonary Medicine,   Sepsis,   Septic,   Severity of Illness Index,   Shock,   Societies,   Syndrome,   Terminology as Topic

Associated Logical Observation Identifiers Names and Codes [LOINC]

Parameter LOINC's and Suggested Units
Temperature 8329-5 : degC      8310-5 : degC      8331-1 : degC      8332-9 : degC      8333-7 : degC      8328-7 : degC      75539-7 : degC      
Heart Rate 8867-4 : beats/min      8893-0 : beats/min      8890-6 : beats/min      8889-8 : beats/min      68999-2 : beats/min      76282-3 : beats/min      69000-8 : beats/min      69001-6 : beats/min      
Respiratory Rate 9303-9 : breaths/min      9279-1 : breaths/min      76170-0 : breaths/min      19840-8 : breaths/min      
PaCO2 2019-8 : mmHg      34705-4 : mmHg      
WBC 6690-2 : #/microL      
WBC Band Percent 764-1 : %      35332-6 : %      26508-2 : %      

 
This material contains content from LOINC (http://loinc.org). LOINC is copyright © 1995-2023, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license. LOINC® is a registered United States trademark of Regenstrief Institute, Inc.

Associated HCC ICD10-CM codes

Associated ICD9-CM codes

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