Cognitive impairment in the intensive care unit.

Area of Science:

• Geriatrics
• Critical Care Medicine
• Neuroscience

Background:

• Delirium is a common and persistent complication for older patients in intensive care units (ICUs).
• Pre-existing cognitive impairment is a significant risk factor for developing delirium in the ICU.
• High delirium rates (50-80%) in the ICU necessitate further investigation.

Purpose of the Study:

• To highlight the urgent need for research into delirium risk factors in the ICU.
• To emphasize the importance of studying the impact of psychoactive medications on delirium.
• To call for research on delirium prevention and its long-term effects.

Main Methods:

• This abstract outlines a critical review of existing knowledge on delirium in the ICU.
• It identifies gaps in current research regarding risk factors and interventions.
• It proposes future research directions based on the identified knowledge gaps.

Main Results:

• Delirium is highly prevalent in older ICU patients, often exacerbated by prior cognitive deficits.
• Current research is insufficient to fully understand delirium's complexities and effective management in the ICU.
• Psychoactive medication use and prevention strategies require further examination.

Conclusions:

• Urgent research is required to address the high incidence and persistence of delirium in older ICU patients.
• Investigating risk factors, including medication effects, and prevention strategies is crucial.
• Understanding the long-term cognitive and functional outcomes post-ICU is essential.