Correct Answer: C

Rationale: To assess the effectiveness of the medication for anemia in a client with CKD, monitoring hemoglobin levels is crucial. Hemoglobin levels serve as a direct indicator of the response to treatment and improvement in the condition. An increase in hemoglobin level to 12 grams/dL suggests that the medication is effectively addressing the anemia associated with CKD.

Correct Answer: A

Rationale: Valproic acid is known to cause liver toxicity as a potential adverse effect. Regular monitoring of liver function tests is crucial to detect any signs of liver damage early on and prevent serious complications.

Correct Answer: D

Rationale: Cimetidine is best absorbed when taken 30 minutes before meals to decrease stomach acid. Administering it before meals allows for optimal absorption and effectiveness of the medication.

Correct Answer: B

Rationale: Bulk-forming laxatives are recommended to prevent constipation because they are safe and considered the most natural option. These laxatives work by absorbing liquid in the intestines, forming a bulky, soft stool that is easier to pass, thereby helping to prevent constipation.

Correct Answer: D

Rationale: Hydroxychloroquine is known to cause vision changes, including retinopathy. Therefore, it is crucial for clients to report any vision changes promptly to their healthcare provider to prevent any potential ocular complications.