A nurse is caring for a client who has an acute exacerbation of chronic pain. Which of the following medications should the nurse anticipate administering for the client?

Rationale: A. Acetaminophen is a non-opioid analgesic used for mild to moderate pain or as an adjunct in multimodal pain management. It works centrally to reduce pain and fever but does not have strong anti-inflammatory or opioid-level analgesic effects. In an acute exacerbation of chronic pain, acetaminophen alone is often insufficient because the pain intensity is typically moderate to severe. It may be used alongside stronger medications but not as primary therapy in this scenario. B. Naloxone is an opioid antagonist, meaning it reverses the effects of opioids by competitively binding to opioid receptors. It is used in cases of opioid overdose, respiratory depression, or opioid toxicity. Administering naloxone would rapidly reverse analgesia and significantly increase the client’s pain, making it inappropriate for pain management. C. Zolpidem is a sedative-hypnotic medication used for short-term treatment of insomnia. It acts on the central nervous system to promote sleep but has no analgesic properties. It does not treat pain and would not be appropriate for managing an acute pain flare. D. Fentanyl is a high-potency synthetic opioid analgesic used for severe acute pain, breakthrough pain, and chronic pain exacerbations, especially in clients who may already be opioid-tolerant. It works by binding strongly to mu-opioid receptors in the brain and spinal cord, altering pain perception and emotional response to pain. It has a rapid onset and short duration of action, making it useful for acute pain episodes. In this scenario, where a client has an acute worsening of chronic pain, fentanyl is an appropriate medication to provide effective and immediate pain relief.