[When is the intensive care patient ready for discharge?]

Area of Science:

• Critical Care Medicine
• Prognostics
• Health Services Research

Background:

• Intensive Care Unit (ICU) patient outcomes are influenced by numerous factors, impacting both in-hospital mortality and post-discharge survival.
• Readmission to the ICU is a significant concern, often linked to the persistence or recurrence of the primary critical illness.
• Understanding these prognostic and predisposing factors is crucial for improving patient care and resource allocation.

Purpose of the Study:

• To review prognostic factors for mortality among ICU patients during their stay and after discharge.
• To identify predisposing factors associated with ICU readmissions.
• To explore potential strategies for reducing mortality and readmission rates.

Main Methods:

• Systematic review of existing literature on ICU patient outcomes.
• Analysis of reported mortality rates and associated prognostic indicators.
• Examination of studies detailing causes and frequencies of ICU readmissions.

Main Results:

• Overall ICU mortality ranges from 12-32%, with post-discharge mortality at 15-35%.
• Significant prognostic factors for mortality include advanced age, illness severity, specific diagnoses, multi-organ failure, nosocomial infections, and prolonged ICU stays.
• ICU readmissions occur frequently (45-65%) and are typically related to the underlying critical illness.

Conclusions:

• Patient age, severity of illness, nosocomial infections, and ICU length of stay are critical determinants of mortality.
• Readmissions are often a consequence of the primary disease process, highlighting the need for comprehensive post-ICU care.
• Increasing ICU capacity or utilizing High Dependency Units may effectively reduce both mortality and readmission rates.