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. 2011 Oct 31;11:21. doi: 10.1186/1471-2253-11-21

Table 1.

Criteria for SIRS and Sepsis syndromes (modified from Dellinger et al [57])

Syndrome Criteria Mortality
Systemic inflammatory response syndrome (SIRS) any two or more of the following criteria ▪ HR>90 bpm
▪ RR>20/min or PaCO2< 32 mmHg
▪ WCC< 4 × 109 cells/L or > 12 × 109 cells/L or > 10% immature bands 12,000
▪ T>38°C or <36°C

Sepsis ▪ SIRS + proven infection 15%

Severe sepsis ▪ Sepsis + failure of one or more organs 20%

Septic shock ▪ Severe sepsis + cardiovascular failure despite adequate fluid resuscitation (usually SABP <90 mmHg or >40 mmHg from baseline) 45%

HR; Heart rate, RR; Respiratory Rate; WCC; White Cell Count; T; Temperature, SIRS; Systemic Inflammatory Response Syndrome, SABP; Systolic Arterial Blood Pressure.