Correct Answer: A

Rationale: Spironolactone is classified as a potassium-sparing diuretic. It works by inhibiting sodium reabsorption in the kidneys while promoting the retention of potassium and hydrogen ions. This mechanism of action helps in reducing fluid retention without causing excessive loss of potassium, which is a common side effect of other diuretics.

Correct Answer: A

Rationale: When administering Spironolactone, it is essential to monitor the client's serum potassium levels because Spironolactone is a potassium-sparing diuretic. Monitoring potassium levels helps to detect hyperkalemia, a potential adverse effect of the medication.

Correct Answer: A

Rationale: Bradycardia is a common adverse effect of Beta Blockers due to their mechanism of action in slowing down the heart rate. Clients taking Beta Blockers should be monitored for signs of bradycardia, such as a slow heart rate, dizziness, or fainting. Monitoring for this adverse effect is crucial to prevent potential complications and ensure client safety.

Correct Answer: B

Rationale: It is crucial to rotate the application site daily when using nitroglycerin patches to prevent skin irritation and ensure optimal absorption of the medication.

Correct Answer: B

Rationale: Maintaining a consistent sodium intake is crucial when taking Lithium to help regulate lithium levels in the body and prevent toxicity. Sodium levels can impact the effectiveness and safety of Lithium therapy, making it important to advise clients to maintain a stable sodium intake.