A nurse is caring for a client who has an infection and is starting to take gentamicin. Which of the following client laboratory tests should the nurse monitor to detect an adverse effect of the medication?

Choice A rationale BNP is used to diagnose heart failure, not to monitor gentamicin’s adverse effects. Choice B rationale Creatinine levels should be monitored as gentamicin can cause nephrotoxicity, leading to impaired kidney function. Choice C rationale Amylase levels are not relevant for detecting gentamicin’s adverse effects. Choice D rationale ESR is used to detect inflammation, not specific to gentamicin’s adverse effects.