Correct Answer: D

Rationale: Hydroxychloroquine is known to cause vision changes, including retinopathy. Therefore, it is crucial for clients to report any vision changes promptly to their healthcare provider to prevent any potential ocular complications.

Correct Answer: A

Rationale: Digoxin, a medication commonly prescribed for heart failure, can lead to bradycardia, which is characterized by a slow heart rate. Monitoring for bradycardia is crucial to detect and manage this potential side effect early on to prevent complications such as arrhythmias or decreased cardiac output.

Correct Answer: B

Rationale: In insulin administration, regular insulin is typically administered before isophane insulin to manage blood glucose effectively. Therefore, if regular insulin is not available, it is best to withhold the dose until it can be administered as prescribed.

Correct Answer: C

Rationale: The correct answer is C: Headache. Dabigatran, an anticoagulant, can cause headache as a potential side effect. Monitoring for headaches is crucial as it may indicate adverse effects or complications that need attention.

Correct Answer: A

Rationale: Pilocarpine, a cholinergic agent, stimulates the ciliary muscle to contract, which opens the trabecular meshwork and facilitates the outflow of aqueous humor, reducing intraocular pressure. This mechanism helps in managing open-angle glaucoma by improving drainage and lowering pressure within the eye.