NCLEX Registered Nurse (NCLEX-RN) Practice Exam

Radioactive iodine is a primary treatment option for hyperthyroidism, particularly in cases of Graves' disease or toxic nodular goiter. This treatment works by utilizing radioactive iodine-131, which is selectively absorbed by the thyroid gland. Once absorbed, the radioactive iodine emits radiation that gradually destroys overactive thyroid cells, ultimately reducing the production of thyroid hormones. This method can effectively lead to a reduction in hyperthyroid symptoms and often results in a more normalized thyroid function.

In contrast, insulin therapy is used to manage diabetes and has no role in treating hyperthyroidism. Beta-blockers, while helpful in managing some symptoms of hyperthyroidism (such as rapid heart rate and anxiety), do not address the underlying cause of the disease. Dietary changes, although they can support overall health, are not a definitive treatment for hyperthyroidism and do not directly influence thyroid hormone production or the underlying pathology. Thus, radioactive iodine is recognized as an effective and targeted therapy for treating hyperthyroidism.