(PHARM) A nurse is preparing to administer ketorolac (Toradol) to a patient for postoperative pain. Which of the following considerations is before administering this medication?

A. Ketorolac is a nonsteroidal anti-inflammatory drug (NSAID) that can be nephrotoxic, especially with prolonged use. Assessing renal function (e.g., BUN, creatinine) is essential before administration. B. Oxygen saturation is important but is not a primary concern specific to ketorolac. C. Appetite assessment is not directly related to the safety or effectiveness of ketorolac. D. While liver function may be considered with many medications, ketorolac's primary risk involves the kidneys rather than the liver.