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
| Variable | Example 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 < 0.5 | 90 |
| Gradiente A-aDO2 (mmHg) — se usa si FiO2 >= 0.5 | 100 |
| arterial pH | 7.40 |
| 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
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