Correct Answer: C

Rationale: The correct answer is C. Hydrochlorothiazide is a thiazide diuretic, which can lead to hypokalemia, hyperglycemia, hypercalcemia, hyperlipidemia, and hyperuricemia. It is a sulfa-based medication, so individuals with a sulfa allergy are at risk for an allergic reaction when taking hydrochlorothiazide.

Correct Answer: D

Rationale: Chemical sunscreens are most effective when applied at least 30 minutes before exposure to the sun to allow them to penetrate the skin and provide optimal protection. Applying sunscreen in advance ensures it has enough time to be absorbed and offer the intended protection. It is important to reapply sunscreen after swimming or sweating to maintain its effectiveness.

Correct Answer: A

Rationale: Bethanechol chloride (Urecholine) stimulates muscarinic receptors, which can lead to bradycardia as an adverse effect. Monitoring for bradycardia is crucial when administering this medication. Constipation, hypertension, and dry mouth are not typically associated with the effects of bethanechol chloride.

Correct Answer: B

Rationale: The correct answer is B: Problems with visual acuity. Ethambutol is known to cause optic neuritis, leading to a decrease in visual acuity and color discrimination. Therefore, any visual changes should be reported promptly to prevent further complications.

Correct Answer: C

Rationale: Alcohol lowers the seizure threshold and should be avoided by individuals taking anticonvulsants.