Epistemis

APACHE II (Acute Physiology and Chronic Health Evaluation II)

Severity score for the first 24 h of ICU admission: twelve acute physiology variables (APS) plus points for age and chronic health. Range 0–71. It is calculated with the most deranged values from those 24 hours.

Required inputs

The inputs this calculator asks for inside the app.
VariableExample value
Temperatura central (°C)37
Presión arterial media (mmHg)85
Heart rate (bpm)80
Frecuencia respiratoria (rpm)16
FiO2 (fracción, 0.21–1.0)0.21
PaO2 (mmHg) — se usa si FiO2 < 0.590
Gradiente A-aDO2 (mmHg) — se usa si FiO2 >= 0.5100
arterial pH7.40
Sodio sérico (mmol/L)140
Potasio sérico (mmol/L)4.0
Serum creatinine (mg/dL)1.0
¿Fracaso renal agudo? (duplica los puntos de creatinina)
Hematocrito (%)42
Leucocitos (x10^3/mm3)8
Escala de Glasgow (3–15)15
Age (years)60
Enfermedad crónica grave o inmunodepresión

Run the calculation in the app

This page explains the score but does not run it. In Epistemis, the calculator validates units, flags values outside physiological ranges, and provides the interpretation that a number alone cannot convey.

Epistemis is educational review material. It is not a medical device, does not diagnose or prescribe treatment, and does not replace formal medical training, current clinical guidelines, or professional clinical judgment.

Specialty
Intensive Care
Area
Specialties
Variables
17
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