APACHE II
Initial severity ·12 variables, age, history ·24 h.
APACHE II
Principle
Initial severity:12 physiological variables, age and qualifying history; score 0–71, without mortality percentage.
Scope
Original 1985 score over the first 24 h in adult ICU, without current calibration or individual prediction. No mortality estimate or treatment decision. Measurements and Glasgow not imputed. Instantaneous case vital signs are not automatically reused.
Interpretation limits
Original 1985 score over the first 24 h in adult ICU, without current calibration or individual prediction. No mortality estimate or treatment decision. Measurements and Glasgow not imputed. Instantaneous case vital signs are not automatically reused.
Formula and logic
APACHE II =sum of 12 physiological contributions +age +history. GCS:15−GCS; creatinine:points×2 with acute renal failure; oxygenation and acid-base:one branch each.
Definition version : 0.1.0
Sources
- Knaus, Draper, Wagner, Zimmerman · Critical Care Medicine — APACHE II: a severity of disease classification system · Figure1, pp.819–820
1985 · Consulté2026-10-07 · Original 1985:12 variables, first 24 h, 0–71, oxygen/HCO3 branches, acute renal failure, history. Author full text read on pp.819–820; local continuous extrapolation explained in the CDC.
- William Knaus · Copie auteur — Article original APACHE II · Figure1 p.820
1985 · Consulté2026-10-07 · Visual reading of the original scoring system and definitions. PDF and original grid not distributed in the capsule; local French labels, no validated translation claimed.