The nurse is reviewing the lab results of an elderly woman that has been taking propylthiouracil for 3 months. The nurse will most likely note which abnormality?


•Propylthiouracil is used to treat hyperthyroidism. The most serious adverse reaction is agranulocytosis, or a reduction in granulocytes (Neutrophils, basophils, eosinophils). This most commonly occurs during the first three months of therapy.

•Seizures, hyperkalemia, and hypokalemia are not associated with the use of propylthiouracil.

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