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?

Choice A reason: Difficulty swallowing isn’t a typical pain sign from epidural failure; it suggests throat or nerve issues unrelated to disc pain. Scientifically, this lacks connection to spinal analgesia efficacy, as herniated disc pain manifests elsewhere, not in pharyngeal function.Choice B reason: Constipation may result from opioids in epidurals, not unrelieved pain. It’s a side effect, not a pain indicator. Scientifically, bowel changes reflect medication impact, not disc pain intensity, making this an unreliable marker for epidural effectiveness.Choice C reason: Urinary retention is an epidural side effect from nerve blockade, not a direct pain signal. Scientifically, it indicates spinal anesthesia depth, not failure to relieve herniated disc pain, distinguishing it from pain-specific behavioral cues.Choice D reason: Clenched teeth reflect facial tension, a common involuntary response to unrelieved spinal pain. Scientifically, this aligns with pain behavior studies, as muscle guarding and grimacing indicate persistent disc-related discomfort, signaling epidural inadequacy effectively.