Final answer:
The nurse should administer ketorolac and then morphine 30 minutes later. Ketorolac is a nonsteroidal anti-inflammatory drug that works to alleviate pain, while morphine is an opioid analgesic that decreases the perception of pain.
Step-by-step explanation:
The nurse should administer ketorolac and then morphine 30 minutes later. This is because ketorolac is a nonsteroidal anti-inflammatory drug (NSAID) that works by inhibiting the production of prostaglandins, which are responsible for pain and inflammation. By administering ketorolac first, it can start working to alleviate pain sooner. Morphine, on the other hand, is an opioid analgesic that works by binding to opioid receptors in the brain and spinal cord to decrease the perception of pain.