Correct Answer: B

Rationale: Avoiding grapefruit juice is crucial when taking Simvastatin because grapefruit juice can increase the blood levels of the medication. This elevation in drug levels can potentiate the side effects of Simvastatin, such as muscle pain and liver damage. It is essential for the client to be aware of this interaction to prevent potential harm and ensure the effectiveness of the medication.

Correct Answer: C

Rationale: Potassium 3.4 mEq/L is below the expected reference range, which increases the risk for digoxin toxicity. Low potassium levels can lead to fatal dysrhythmias, particularly in older clients taking Digoxin. Monitoring and correcting electrolyte imbalances are crucial to prevent adverse effects of digoxin therapy.

Correct Answer: D

Rationale: A urine output of 200 mL in 8 hours indicates decreased kidney function, potentially due to Furosemide therapy. This finding can suggest inadequate renal perfusion and impaired drug clearance, necessitating immediate reporting to prevent further complications like electrolyte imbalances and worsening heart failure.

Correct Answer: D

Rationale: A urine output of 200 mL in 8 hours indicates decreased kidney function and potential worsening heart failure. This finding should be reported promptly to the provider for further evaluation and management to prevent complications.

Correct Answer: A

Rationale: Fluoxetine, an SSRI used to treat PTS, can lead to decreased libido as a potential adverse effect. It is crucial for the nurse to educate the client about this possible side effect to promote awareness and understanding.