Correct Answer: B

Rationale: The correct answer is to instruct the client to remain upright for 30 minutes after taking Alendronate. This medication can cause esophageal irritation, and maintaining an upright position for at least 30 minutes helps prevent complications such as esophagitis or esophageal ulcers.

Correct Answer: C

Rationale: Sucralfate can interfere with the absorption of phenytoin. To prevent this interaction, the client should allow a 2-hour interval between taking sucralfate and phenytoin. This interval helps ensure that each medication is absorbed effectively without affecting the other's absorption.

Correct Answer: B

Rationale: Furosemide, a diuretic, commonly causes hyponatremia (low sodium levels) as it increases the excretion of sodium. The nurse needs to monitor the client for signs of hyponatremia, such as confusion, weakness, and muscle cramps, by checking electrolyte levels regularly.

Correct Answer: C

Rationale: The correct answer is C. Propranolol is a beta-adrenergic antagonist that helps decrease heart rate and control tremors in individuals with Graves' disease. It does not increase blood flow to the thyroid gland (choice A), prevent excess glucose in the blood (choice B), or directly decrease thyroid hormone levels in the body (choice D).

Correct Answer: B

Rationale: Atenolol is a beta-blocker that can cause bradycardia (slow heart rate). Monitoring the heart rate regularly is essential to detect any significant decreases promptly. This allows for timely intervention and adjustment of the medication regimen if needed, helping to prevent adverse effects associated with bradycardia.