Systemic inflammatory response syndrome

Systemic Inflammatory Response Syndrome (SIRS) Criteria

• Still acceptable to use in ED depending on local protocol
• Misses up to 1/8 very septic ICU patients

• ≥2 of 4 criteria must be present:

1. Temperature >38°C (100.4F) or <36°C (96.9F)
2. HR >90 BPM
3. RR >20 breaths/minute or PaCO2 <32 mmHg
4. WBC count >12,000/mm3, <4,000/mm3, or >10% bands/immature forms

External Links

• MDCalc - SIRS, Sepsis, and Septic Shock Criteria

See Also

• Sepsis (Main)
• Sepsis (Peds)
• Initial Antibiotics in Sepsis (Main)
• qSOFA