Which nursing intervention has priority when initiating a continuous epidural infusion with an opioid analgesic?

A) Apply a pulse oximeter to the client per protocol: This intervention is crucial as opioid analgesics can cause respiratory depression, which is a significant risk when starting a continuous epidural infusion. Monitoring oxygen saturation helps ensure the client's safety and enables early detection of any respiratory issues. B) Administer a stool softener per PRN protocol: While managing potential constipation is important in clients receiving opioid therapy, it is not the immediate priority when initiating the epidural infusion. This can be addressed later. C) Insert an indwelling urinary catheter per protocol: This may be necessary for some clients, especially those who are post-operative or unable to void. However, it is not the most critical initial action related to the risks associated with opioids. D) Administer an antiemetic per PRN prescription: Nausea and vomiting can occur with opioid use, but ensuring the client's respiratory function is stable takes precedence over this intervention. Monitoring and managing respiratory status is the priority.