A nurse is preparing to administer IV ketorolac to a client who has postoperative pain. Which action should the nurse take before administering the medication?

Mix the medication with a narcotic IV pain medication for synergistic effect.

Confirm the client's renal function is within normal limits.

Administer the medication quickly to provide immediate pain relief.

Administer the medication before checking the client's vital signs to address the client's pain promptly.