Mortality prediction in intensive care.
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The APACHE II (Acute Physiology and Chronic Health Evaluation II) score is a standardized, objective tool designed to assess disease severity and predict mortality risk for critically ill adult patients in intensive care units (ICUs). Utilized globally by clinicians, intensivists, and researchers, it provides a crucial framework for prognostication and resource management. The score is calculated based on a patient's acute physiological derangement (derived from 12 routine physiological measurements), age, and chronic health status. Its value lies in enabling standardized severity assessment, facilitating comparative analysis across different ICUs, informing treatment strategies, and serving as an essential metric for quality improvement, benchmarking, and clinical research in critical care medicine.