A nurse is caring for a client who is dilated to 10 cm and pushing. Which of the following pain-management measures should the nurse identify as a safe option for the client?

Rationale: A. Butorphanol tartrate: This opioid analgesic can cause respiratory depression in the newborn if given too close to delivery. At 10 cm dilation and during pushing, it's generally too late to administer systemic opioids safely. B. Pudendal block: A pudendal block provides localized perineal anesthesia and is safe for use during the second stage of labor when the client is fully dilated and pushing. It effectively reduces pain from stretching and pressure without affecting uterine contractions or fetal status. C. Naloxone hydrochloride: Naloxone is not a pain-management measure; it is an opioid antagonist used to reverse opioid-induced respiratory depression. It does not provide analgesia and is not administered for pain relief during labor. D. Spinal anesthesia: Spinal anesthesia is typically administered prior to a planned cesarean birth or late in the first stage of labor. It is not appropriate once the client is fully dilated and actively pushing, as it could delay delivery and complicate maternal positioning.