Correct Answer: A

Rationale: Spironolactone is a potassium-sparing diuretic that can lead to hyperkalemia as an adverse effect. Hyperkalemia is characterized by elevated levels of potassium in the blood, which can be dangerous and lead to cardiac arrhythmias. Therefore, monitoring for signs and symptoms of hyperkalemia is crucial when a client is taking spironolactone.

Correct Answer: A

Rationale: An INR of 4.0 is above the therapeutic range for a client on Warfarin, indicating an increased risk of bleeding. This finding requires immediate reporting to the provider for appropriate intervention to prevent complications associated with excessive anticoagulation.

Correct Answer: B

Rationale: Tetracycline can cause photosensitivity, making the client more sensitive to the sun's rays. To prevent adverse reactions like sunburn or skin rashes, it is essential for the client to avoid prolonged sun exposure and wear protective clothing when outdoors.

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: A

Rationale: The therapeutic effect of lisinopril, an ACE inhibitor, is indicated by a decrease in blood pressure. Lisinopril works by relaxing blood vessels, leading to a reduction in blood pressure. Monitoring and achieving a decrease in blood pressure is a key outcome when managing hypertension with lisinopril.