Which of the following is NOT a long-term psych issue from ICU stay?

• A. PTSD
• B. Depression
• C. Delirium
• D. Anxiety

Answer: (C)

Delirium is an acute, fluctuating disturbance of attention and awareness that occurs during critical illness and ICU stay. It is driven by immediate factors such as illness severity, medications, sleep disruption, and metabolic or organ dysfunction. Its hallmark is sudden onset with periods of confusion that come and go, and it typically resolves over days to weeks, often before discharge. Because it is defined by its abrupt onset and transient course, delirium isn’t considered a long-term psychiatric condition.

In contrast, conditions like PTSD, depression, and anxiety can persist well after ICU discharge and contribute to long-term psychological sequelae seen in post-intensive care syndrome. Delirium during the ICU stay can be a risk factor for longer-term cognitive or psychological challenges, but the delirium itself is an acute phenomenon, not a chronic mental health diagnosis.