Which is a risk factor for ICU delirium?

Which is a risk factor for ICU delirium?

• A. Sedation
• B. Immunization
• C. Exercise
• D. Adequate analgesia

Answer: (A)

Sedation is a major modifiable risk factor for ICU delirium because sedatives alter brain neurotransmission, reduce arousal, and disrupt the sleep–wake cycle. Depth and duration of sedation—especially with benzodiazepines and opioids—increase the likelihood of delirium in critically ill patients. While keeping the patient comfortable is important, excessive or prolonged sedation can cloud cognition and precipitate delirium. In contrast, good analgesia helps reduce stress and agitation, and early mobilization tends to lower delirium risk; immunization does not influence delirium, and exercise is not a risk factor.

Sedation is a major modifiable risk factor for ICU delirium because sedatives alter brain neurotransmission, reduce arousal, and disrupt the sleep–wake cycle. Depth and duration of sedation—especially with benzodiazepines and opioids—increase the likelihood of delirium in critically ill patients. While keeping the patient comfortable is important, excessive or prolonged sedation can cloud cognition and precipitate delirium. In contrast, good analgesia helps reduce stress and agitation, and early mobilization tends to lower delirium risk; immunization does not influence delirium, and exercise is not a risk factor.