Final answer:
The nurse should monitor the client receiving an epidural anesthetic during labor for the side effect of urinary retention.
Step-by-step explanation:
The nurse should monitor the client receiving an epidural anesthetic during labor for the side effect of urinary retention. Urinary retention is a common side effect of epidural anesthesia and can occur due to the numbing effect on the nerves that control bladder function. The client may have difficulty emptying their bladder, which can lead to discomfort and potential complications. The nurse should assess the client's bladder regularly and take appropriate measures to prevent or manage urinary retention, such as providing a bedpan or assisting the client with catheterization if necessary.