APACHE IV Mortality Score

Estimate ICU mortality probability using the APACHE IV model, which incorporates admission diagnosis, acute physiology variables, ventilation status, and chronic conditions.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Estimate ICU mortality probability using the APACHE IV model, which incorporates admission diagnosis, acute physiology variables, ventilation status, and chronic conditions

Each component has a specific meaning:

  • APACHE IV model — The apache iv model recorded for the scenario being assessed.
  • Which incorporates admission diagnosis — The which incorporates admission diagnosis recorded for the scenario being assessed.
  • Ventilation status — The ventilation status recorded for the scenario being assessed.
  • Chronic conditions — The chronic conditions recorded for the scenario being assessed.

Note: Interpret the apache iv result against the thresholds and context described above.

How to Use

Enter the APACHE IV model, which incorporates admission diagnosis, ventilation status, chronic conditions for the scenario you are assessing. Estimate ICU mortality probability using the APACHE IV model, which incorporates admission diagnosis, acute physiology variables, ventilation status, and chronic conditions. Use the apache iv result to inform your calculation.

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Frequently Asked Questions