c. NaloxoneMorphine is a common opioid analgesic used for postoperative pain management that can cause central nervous system depression and can cause respiratory depression. The nurse should administer naloxone, an opioid antagonist, to reverse the opioid-induced respiratory depression in the client.The nurse should administer fentanyl to the client for the relief of severe, recurrent, or persistent pain during labor. Fentanyl is most commonly administered via PCA pump or epidural, alone or with a local anesthetic agent. An adverse effect of this medication is respiratory depression.The nurse should administer butorphanol to the client for the relief of labor pain and severe postoperative pain after cesarean birth. An adverse effect of this medication is respiratory depression.The nurse should administer meperidine to the client for the relief of severe, persistent pain. An adverse effect of this medication is respiratory depression.