SIRS ,SEPSIS,AND SEPTIC SHOCK CRITERIA

SIRS, Sepsis, and Septic Shock Criteria (Alberta)

Defines the severity of sepsis and septic shock.

SIRS Criteria (≥ 2 meets SIRS definition)

Temp >38°C (100.4°F) or < 36°C (96.8°F)

YES

NO

Heart Rate > 90

YES

NO

Respiratory Rate > 20 or PaCO₂ < 32 mm Hg

YES

NO

WBC > 12,000/mm>³, < 4,000/mm>³, or > 10% bands

YES

NO

Sepsis Criteria (SIRS + Source of Infection)

Suspected or Present Source of Infection

YES

NO

Severe Sepsis Criteria (Organ Dysfunction, Hypotension, or Hypoperfusion)

Lactic Acidosis, SBP <90 or SBP Drop ≥ 40 mm Hg of normal

YES

NO

Septic Shock Criteria

Severe Sepsis with Hypotension, despite adequate fluid resuscitation

YES

NO

Multiple Organ Dysfunction Syndrome Criteria

Evidence of ≥ 2 Organs Failing

YES

NO