A nurse is caring for a client who has a prescription for a fentanyl transdermal patch and had one patch applied 4 hr ago. The client reports breakthrough pain. Which of the following actions should the nurse take?

A. Provide a long-acting NSAID: Long-acting NSAIDs are not appropriate for breakthrough pain because they take time to achieve therapeutic effect and are insufficient for managing acute pain episodes in clients already on opioid therapy. B. Administer a short-acting opioid: Short-acting opioids are indicated for breakthrough pain in clients using long-acting opioid patches like fentanyl. They provide rapid analgesia without altering the baseline opioid regimen. C. Apply heat to the patch: Applying heat to a fentanyl patch increases drug absorption and can lead to overdose or serious adverse effects. Heat should be avoided to maintain safe dosing. D. Replace the patch with a new one: Replacing the patch before the scheduled time can cause excessive opioid dosing and increase the risk of toxicity. Fentanyl patches are typically changed every 72 hours.