What is a common serious adverse effect of opioids that Unit Clerks must monitor for?

• A. Hypertension
• B. Rash with itching
• C. Nausea only
• D. Respiratory depression and excessive sedation

Answer: (D)

Opioids slow the brainstem centers that regulate breathing and increase sedation, so the combination of respiratory depression and excessive drowsiness is the most dangerous adverse effect to watch for. This can rapidly lead to hypoxia and respiratory failure if not identified early. Unit Clerks monitor signs such as respiratory rate and depth, oxygen saturation, and level of consciousness, and should flag any marked slowing, shallow breathing, or reduced responsiveness to ensure prompt intervention. While itching with rash and nausea can occur with opioids, and blood pressure changes can happen, none pose the same immediate life-threatening risk as respiratory depression with deep sedation.