Correct Answer: A

Rationale: Spironolactone is a potassium-sparing diuretic. The client should avoid salt substitutes because they often contain potassium, which could lead to hyperkalemia. Hyperkalemia, or high levels of potassium in the blood, is a potential side effect of spironolactone, and ingesting additional potassium from salt substitutes can exacerbate this risk.

Correct Answer: A

Rationale: The nurse should instruct the client to take these medications with food to reduce GI disturbances.

Correct Answer: C

Rationale: Neutropenia is a common adverse effect of paclitaxel due to bone marrow suppression. Clients should be instructed to monitor for signs of infection and report any symptoms such as fever, chills, or sore throat immediately to their healthcare provider.

Correct Answer: B

Rationale: The nurse should monitor the client's serum lithium levels to ensure they are within the therapeutic range and to assess for potential toxicity. Monitoring serum lithium levels is crucial because lithium has a narrow therapeutic range, and levels outside this range can lead to toxicity, which can be life-threatening. Therefore, regular monitoring is essential to prevent adverse effects and ensure the medication's effectiveness.

Correct Answer: B

Rationale: To determine the number of tablets needed, divide the desired dose by the dose per tablet. In this case, (2 mg / 1 mg/tablet) = 2 tablets required to administer the prescribed dose of Haloperidol.