A nurse in an emergency department is administering naloxone to a client who is experiencing opioid toxicity. Following administration of the medication, which of the following should the nurse assess first?

A. Breath sounds should be assessed first because naloxone is administered to reverse respiratory depression caused by opioid toxicity. Ensuring that the client is breathing adequately is the top priority. B. Blood pressure is important to monitor, but it is not the immediate priority after administering naloxone. Respiratory status takes precedence. C. Heart rate is also important to monitor, but it is secondary to ensuring adequate respiration. D. Pain level should be assessed, but it is not the immediate priority following naloxone administration. The primary concern is the client’s respiratory status.