A nurse is assisting with the care of a client who is receiving a spinal epidural to treat a herniated disc. Which of the following findings should the nurse identify as an indicator of unrelieved pain?

Rationale: A. Urinary retention: Urinary retention is a potential side effect of epidural anesthesia due to blockade of sacral nerves, not necessarily a sign of unrelieved pain. It may occur even if pain is well managed, especially with regional anesthetics affecting bladder function. B. Restlessness: Restlessness is a common behavioral indicator of unrelieved pain. When verbal reporting is limited or unreliable, restlessness may reflect discomfort, agitation, or anxiety related to inadequate pain control following procedures such as epidural administration. C. Difficulty swallowing: Difficulty swallowing is not associated with pain from a herniated disc or the effects of an epidural. It may instead suggest upper airway or neurologic issues and should prompt assessment for complications unrelated to pain control. D. Constipation: Constipation is more commonly linked to opioid use or immobility rather than unrelieved pain. While discomfort may contribute, constipation alone does not reliably indicate the adequacy of pain relief in clients receiving an epidural.