Critical Care

APACHE IV Score for ICU Mortality & Length of Stay

Calculates APACHE IV acute physiology score, in-hospital mortality, and predicted ICU length of stay.

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Parameters

APACHE IV Score for ICU Mortality & Length of Stay Result

FormulaAPACHE IV Score = Acute Physiology Score (APS from 15 variables) + Age Points (0-24) + Chronic Comorbidities (0-16)

Clinical Pearls

The benchmark severity-of-illness and mortality prediction model utilized in modern intensive care units for clinical risk adjustment and quality improvement.

Limitations

Scored using the most abnormal physiological values during the first 24 hours of ICU admission; does not supersede real-time bedside clinical judgment.