Which option lists a delirium prevention medication among the following?

Which option lists a delirium prevention medication among the following?

• A. Dexmedetomidine
• B. Olanzapine
• C. Ramelteon
• D. Dexmedetomidine hydrochloride, olanzapine, ramelteon, risperidone

Answer: (D)

Delirium prevention in the hospital often focuses on agents that support lighter sedation and stable sleep-wake cycles. Dexmedetomidine, used for ICU sedation, tends to reduce delirium risk because it allows arousable, non-benzodiazepine–type sedation and preserves natural sleep. Ramelteon helps regulate the circadian rhythm by acting on melatonin receptors, and evidence suggests it can lower delirium incidence in surgical and ICU patients. Olanzapine and risperidone are antipsychotics aimed at treating delirium symptoms, with less clear, routine evidence for prevention. So the option that includes medications with demonstrated preventive effects—both dexmedetomidine and ramelteon—best reflects delirium prevention therapy, making that choice the most appropriate.

Delirium prevention in the hospital often focuses on agents that support lighter sedation and stable sleep-wake cycles. Dexmedetomidine, used for ICU sedation, tends to reduce delirium risk because it allows arousable, non-benzodiazepine–type sedation and preserves natural sleep. Ramelteon helps regulate the circadian rhythm by acting on melatonin receptors, and evidence suggests it can lower delirium incidence in surgical and ICU patients. Olanzapine and risperidone are antipsychotics aimed at treating delirium symptoms, with less clear, routine evidence for prevention. So the option that includes medications with demonstrated preventive effects—both dexmedetomidine and ramelteon—best reflects delirium prevention therapy, making that choice the most appropriate.