Correct Answer: A

Rationale: Hydrochlorothiazide is a diuretic that can cause potassium loss, leading to hypokalemia. Monitoring potassium levels is crucial to prevent potential adverse effects such as cardiac arrhythmias and muscle weakness.

Correct Answer: B

Rationale: Smoking can interfere with the effectiveness of ranitidine and worsen ulcer symptoms. Clients should avoid smoking while taking this medication to ensure optimal therapeutic outcomes.

Correct Answer: D

Rationale: Regular insulin usually peaks around 1 to 5 hours after administration. This peak time frame is important to consider when managing blood glucose levels and timing meals to coincide with insulin activity.

Correct Answer: C

Rationale: Rinsing the mouth after using inhaled beclomethasone is important to prevent fungal overgrowth in the mouth, a common side effect of corticosteroid inhalers.

Correct Answer: A

Rationale: Acetaminophen is known to lose its effectiveness in controlling pain beyond a dosage of 1,000 mg. It is important to adhere to recommended dosages to ensure optimal pain relief and avoid potential adverse effects associated with higher doses.