Intensive care unit delirium.

Area of Science:

• Critical Care Medicine
• Geriatric Medicine
• Neuroscience

Background:

• Delirium is a common and serious complication in intensive care units (ICUs), affecting 20% to 80% of patients.
• Validated tools like the Confusion Assessment Method for the ICU and Intensive Care Delirium Screening Checklist aid in delirium assessment.
• ICU delirium is associated with significant increases in morbidity and mortality.

Purpose of the Study:

• To highlight the prevalence and impact of ICU delirium.
• To identify key risk factors contributing to delirium development.
• To discuss current management strategies, including prevention and pharmacologic treatment.

Main Methods:

• Review of existing literature on ICU delirium assessment, risk factors, and management.
• Utilized established ICU-validated scoring tools for delirium assessment.
• Analysis of predisposing and precipitating factors associated with delirium.

Main Results:

• Identified predisposing factors: history of alcohol abuse, dementia, hypertension.
• Identified precipitating factors: immobilization, oversedation, illness severity, benzodiazepine use.
• Pharmacologic treatment with atypical antipsychotics may reduce delirium duration but requires careful monitoring for adverse effects.

Conclusions:

• Preventing identified risk factors is paramount in managing ICU delirium.
• Early identification and intervention are critical due to the association with increased morbidity and mortality.
• Pharmacologic interventions should be used cautiously, with close monitoring for side effects.