2023 HESI PHARMACOLOGY VERSION 2 nurs400 (100 QUESTIONS AND ANSWERS WITH RATIONALE)| 100% PASS |NEW!!
A client is being treated for hyperthyroidism with propylthiouracil (PTU). The nurse knows that the actionof this drug is to A) decrease the amount of thyroid-stimulating hormone circulating in the blood. B) increase the amount of thyroid-stimulating hormone circulating in the blood. C) increase the amount of T4 and decrease the amount of T3 produced by the thyroid. D) inhibit synthesis of T3 and T4 by the thyroid gland. D) inhibit synthesis of T3 and T4 by the thyroid gland. PTU is an adjunct therapy used to control hyperthyroidism by inhibiting production of thyroid hormones (D). Itis often prescribed in preparation for thyroidectomy or radioactive iodine therapy. Thyroid-stimulating hormone (TSH) is produced by the pituitary gland, and PTU does not affect the pituitary (A and B). PTU inhibitsthe synthesis of all thyroid hormones--both T3 and T4(C).
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