A nurse is reviewing the laboratory findings for a female client who is taking zidovudine to treat HIV. Which of the following should the nurse identify as an adverse finding associated with this medication?

Choice A rationale A neutrophil count of 650/mm³ is significantly lower than the normal range (2,500 to 8,000/mm³) and indicates neutropenia, which is a known adverse effect of zidovudine. Neutropenia increases the risk of infections and requires close monitoring and potential dose adjustment or discontinuation of the medication. Choice B rationale A platelet count of 450,000/mm³ is slightly above the normal range (150,000 to 400,000/mm³) but is not typically associated with zidovudine toxicity. Zidovudine is more commonly associated with bone marrow suppression leading to anemia and neutropenia rather than thrombocytosis. Choice C rationale An Hgb level of 17 g/dL is above the normal range for females (12 to 16 g/dL) but is not a common adverse effect of zidovudine. Zidovudine is more likely to cause anemia, leading to lower hemoglobin levels rather than elevated levels. Choice D rationale A creatinine level of 1.5 mg/dL is within the upper limit of the normal range (0.5 to 1 mg/dL) and is not a typical adverse effect of zidovudine. Zidovudine primarily affects the bone marrow and does not have a significant impact on renal function.