Which of the following medications can cause respiratory depression in this patient?

Benzodiazepines (diazepam) and opioids both depress the central respiratory drive in the brainstem and must be used with extreme caution — or avoided — in obstructive sleep apnea because of the additive airway and respiratory risk. Ketamine preserves respiratory drive (it is a dissociative anesthetic). Ketorolac and acetaminophen have no significant respiratory depressant effect.