Correct Answer: A

Rationale: Visual disturbances, such as yellow-tinged vision or seeing halos around lights, are common signs of digoxin toxicity. These symptoms should be reported immediately to healthcare providers for further evaluation and management.

Correct Answer: C

Rationale: Ondansetron can cause tremors as an adverse effect. Monitoring for tremors is essential as it can indicate a potential adverse reaction to the medication and prompt intervention is necessary to ensure the client's safety and comfort.

Correct Answer: C

Rationale: In the case of a UTI, a sensitivity test is crucial as it identifies the most effective antibiotic to target the specific microorganism causing the infection. This test helps in prescribing the appropriate antibiotic for successful treatment and preventing antibiotic resistance.

Correct Answer: B

Rationale: Limiting intake of caffeine-containing beverages is important for managing peptic ulcer disease as caffeine can stimulate gastric acid secretion, which may worsen the condition. It is advisable to choose decaffeinated beverages and avoid caffeinated drinks to help reduce the risk of aggravating the ulcer.

Correct Answer: C

Rationale: The correct instruction for a client prescribed Alendronate is to sit upright for at least 30 minutes after taking the medication. Alendronate can cause esophageal irritation, and maintaining an upright position helps prevent this adverse effect by reducing the risk of reflux of the medication into the esophagus.