A nurse is caring for a client who has breast cancer and reports pain 1 hr after administration of prescribed morphine 10 mg IV. Which of the following medications should the nurse expect to administer?

The correct answer is A: Fentanyl transmucosal. Fentanyl is a potent opioid analgesic that can be used for breakthrough pain in cancer patients. It has a rapid onset of action and can provide effective pain relief when standard opioids like morphine are not sufficient. In this case, since the client is experiencing pain 1 hour after receiving morphine, a faster-acting medication like fentanyl transmucosal would be appropriate.
The other choices are incorrect because:
B: Lidocaine patch is used for localized pain relief and not suitable for breakthrough pain in this scenario.
C: Morphine tablet is not ideal for managing breakthrough pain quickly as it has a slower onset of action compared to fentanyl.
D: Naloxone IV is a opioid antagonist used for opioid overdose reversal and not indicated for managing breakthrough pain.