The practical nurse (PN) is caring for a client receiving chemotherapy who has thrombocytopenia. Which intervention is most important to include in the nursing plan of care?

A. Watch the client for abnormal bleeding: Thrombocytopenia increases the risk of spontaneous bleeding and hemorrhage. Monitoring for signs such as petechiae, ecchymosis, or bleeding from mucous membranes is the most critical safety measure. B. Obtain the client's blood pressure frequently: While important for overall assessment, frequent BP monitoring does not directly prevent or detect bleeding unless invasive procedures are performed. C. Maintain protective isolation precautions: Protective isolation primarily prevents infection, which is crucial for neutropenic clients but does not address the bleeding risk associated with low platelets. D. Observe for signs of dehydration: Hydration is important in chemotherapy care but is secondary to preventing life-threatening bleeding in a client with thrombocytopenia.