Correct Answer: B

Rationale: Propylthiouracil (PTU) is a medication used to treat hyperthyroidism by suppressing the production of thyroid hormones. It works by inhibiting the enzyme responsible for the synthesis of thyroid hormones, thereby reducing their levels in the body. This helps to alleviate the symptoms of hyperthyroidism and restore thyroid hormone levels to normal range.

Correct Answer: A

Rationale: Timolol eye drops are prescribed to reduce intraocular pressure in patients with glaucoma. By decreasing the pressure within the eye, timolol helps prevent damage to the optic nerve, which is crucial in managing glaucoma and preserving vision. Dilating or constricting the pupils or enhancing tear production are not the primary actions of timolol eye drops.

Correct Answer: A

Rationale: The correct teaching point for a patient prescribed methotrexate is to take folic acid supplements as prescribed. Methotrexate can lead to a folate deficiency, which is why supplementing with folic acid is essential to reduce the risk of side effects such as mouth sores, nausea, and liver problems.

Correct Answer: A

Rationale: The correct answer is hyperglycemia. Prednisone, a corticosteroid, can lead to elevated blood sugar levels as a side effect, particularly in patients with diabetes or those predisposed to developing diabetes. Monitoring for hyperglycemia is crucial to prevent complications like diabetic ketoacidosis and hyperglycemic hyperosmolar syndrome.

Correct Answer: B

Rationale: The primary purpose of prescribing calcium acetate to a patient with chronic kidney disease (CKD) is to reduce phosphate levels. Calcium acetate binds to dietary phosphate, preventing its absorption and helping to manage hyperphosphatemia commonly seen in CKD patients.