Systemic Inflammatory Response Syndrome(SIRS)

SIRS criteria

Any 2 out of 4 of the criteria are met :

• Body temperature >38 / <36
• HR >90 bpm
• RR >20 OR pCO2 <32 mmHg
• Leucocyte >12 or <4 x109/L

However, remember that almost all septic patients have SIRS¹, but not all SIRS patients are septic.

qSofa Criteria

The qSOFA score² (also known as quickSOFA) is a bedside prompt that may identify patients with suspected infection who are at greater risk for a poor outcome outside the intensive care unit (ICU).

Any 2 of the criteria below are met:

• Altered mental status
• RR >22
• SBP ≤100 mmHg

1. https://www.ncbi.nlm.nih.gov/books/NBK547669/#:~:text=Systemic%20inflammatory%20response%20syndrome%20(SIRS,exogenous%20source%20of%20the%20insult ↩︎
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7260919/ ↩︎