Which medication class is not typically associated with delirium?

Which medication class is not typically associated with delirium?

• A. Narcotics
• B. Antidepressants
• C. Beta blockers
• D. Anticholinergic agents

Answer: (C)

Delirium in older adults is frequently driven by medications that impair brain function or block acetylcholine. Anticholinergic drugs are a classic trigger because they directly reduce acetylcholine signaling, a key mechanism in attention and arousal. Opioids can contribute through CNS depression, and some antidepressants can add to delirium risk via anticholinergic effects or metabolic disturbances. Beta blockers, on the other hand, do not have strong anticholinergic properties and are not primarily CNS depressants at usual doses, so they are not typically linked to delirium. If confusion occurs with a beta blocker, look for other causes such as infection, electrolyte or metabolic issues, dehydration, hypoxia, or other medications with higher delirium risk.

Delirium in older adults is frequently driven by medications that impair brain function or block acetylcholine. Anticholinergic drugs are a classic trigger because they directly reduce acetylcholine signaling, a key mechanism in attention and arousal. Opioids can contribute through CNS depression, and some antidepressants can add to delirium risk via anticholinergic effects or metabolic disturbances. Beta blockers, on the other hand, do not have strong anticholinergic properties and are not primarily CNS depressants at usual doses, so they are not typically linked to delirium. If confusion occurs with a beta blocker, look for other causes such as infection, electrolyte or metabolic issues, dehydration, hypoxia, or other medications with higher delirium risk.