A nurse is caring for a client receiving an intermittent IV bolus of gentamicin twice daily. Which of the following laboratory values should the nurse monitor while the client is receiving this medication? (Select all that apply.)

Choice A rationale Glucose levels are not typically monitored for patients receiving gentamicin. Choice B rationale Prothrombin time is not typically monitored for patients receiving gentamicin. Choice C rationale Serum creatinine should be monitored because gentamicin can cause nephrotoxicity, and elevated serum creatinine levels can indicate kidney damage. Choice D rationale Cardiac enzymes are not typically monitored for patients receiving gentamicin. Choice E rationale WBC count should be monitored because gentamicin can cause leukopenia or other changes in white blood cell counts.