A nurse is caring for a 4-year-old child who has meningitis and is receiving gentamicin. Which of the following laboratory values should the nurse report to the provider?

A. BUN 6 mg/dL (5 to 18 mg/dL): A BUN of 6 mg/dL falls within the normal range for a 4-year-old child and does not indicate renal impairment. This value does not require reporting to the provider when monitoring gentamicin therapy. B. BUN 12 mg/dL (5 to 18 mg/dL): A BUN of 12 mg/dL is within the expected range and suggests normal kidney function. This laboratory value is not concerning in the context of gentamicin administration. C. Creatinine 0.3 mg/dL (0.2 to 0.5 mg/dL): A creatinine of 0.3 mg/dL is within the normal range for a child and indicates adequate renal function. Monitoring should continue, but this value does not require immediate intervention. D. Creatinine 1.4 mg/dL (0.2 to 0.5 mg/dL): A creatinine of 1.4 mg/dL is significantly above the normal range for a 4-year-old, indicating potential nephrotoxicity. Gentamicin can cause kidney damage, so this finding should be reported immediately to the provider for possible dosage adjustment or discontinuation.