A postoperative client receiving intravenous morphine via patient-controlled analgesia (PCA) is found unresponsive with a respiratory rate of 6 breaths per minute and pinpoint pupils. The nurse should take immediate action.

The client's unresponsiveness, bradypnea (respiratory rate 6), and pinpoint pupils are classic signs of opioid-induced respiratory depression. The nurse should administer naloxone, an opioid antagonist, as prescribed and provide ventilatory support with a bag-valve-mask if needed. Flumazenil is a benzodiazepine antagonist and is not indicated. Increasing morphine would worsen respiratory depression. After reversal, the nurse must monitor respiratory rate, oxygen saturation, and level of consciousness because naloxone's duration of action is shorter than many opioids, and re-sedation may occur.

Use the client-specific assessment findings and timing in the scenario rather than a memorized diagnosis label.

Connect the relevant cues to the safest nursing interpretation and action for this exact care setting.

The distractors are plausible in another context but are unsupported, mistimed, lower priority, or incomplete for the findings presented.

Address immediate threats first, stay within nursing scope, and reassess the client after the selected intervention.

For linking opioid respiratory depression to reversal and reassessment, select responses that are both clinically supported and appropriate at this point in care.

• Opioid-induced respiratory depression — A life-threatening adverse effect of opioids characterized by decreased respiratory rate, decreased level of consciousness, and pinpoint pupils.
• Naloxone — An opioid antagonist that rapidly reverses opioid effects, including respiratory depression, but has a shorter duration of action than many opioids.
• Bradypnea — Abnormally slow breathing rate, typically less than 12 breaths per minute in adults.