A client who is receiving zidovudine reports the appearance of pinpoint, red, round spots on the skin. Which result should the nurse report to the healthcare provider (HCР)?

A. Complete blood count: Zidovudine can cause bone marrow suppression, leading to thrombocytopenia. Pinpoint red spots, or petechiae, are a sign of low platelet count. A CBC is the most relevant test to evaluate for cytopenias and should be reported promptly to the provider. B. Skin biopsy: A biopsy would help diagnose dermatologic conditions such as rashes, lesions, or malignancies, but petechiae are usually vascular in nature and related to platelet abnormalities. C. Allergy test: Allergy testing evaluates hypersensitivity to specific allergens but is not relevant here. Petechiae are not typical of allergic reactions; instead, they reflect impaired clotting or low platelets. D. Electromyography: EMG measures electrical activity in muscles to assess for neuromuscular disorders. It has no connection to the client’s presentation of petechiae and is unrelated to zidovudine’s known adverse effects.