Correct Answer: B

Rationale: Theophylline should be administered on a regular around-the-clock schedule to provide the best bronchodilating effect and reduce the potential for adverse effects. The correct dosing schedule of 8 a.m., 4 p.m., and midnight ensures that the client receives consistent dosing throughout the day. Other options do not provide the necessary around-the-clock coverage. It's important to note that food may affect the absorption of the medication, which is why the dosing schedule should not be tied to meal times.

Correct Answer: C

Rationale: A potassium level of 5.5 mEq/L (C) is elevated and concerning in a client with renal failure receiving hemodialysis, as it can lead to life-threatening cardiac arrhythmias. Monitoring blood pressure (A), weight gain (B), and weight loss (D) are essential in clients on hemodialysis, but an elevated potassium level poses an immediate risk that requires prompt intervention.

Correct Answer: D

Rationale: In fostering a therapeutic relationship, demonstrating respect is essential as it helps the patient feel valued and understood. Respectful communication contributes to building trust and a safe environment for open and honest discussions.

Correct Answer: A

Rationale: The client has expressed a plan to read until feeling sleepy, indicating that he is managing his inability to sleep. In this situation, it is best for the nurse to respect the client's autonomy and leave the room, providing privacy and an opportunity for the client to relax and hopefully fall asleep. Closing the door can also help create a quiet environment conducive to rest.

Correct Answer: A

Rationale: The best action for the nurse is to determine the client's usual bedtime routine and include these rituals in the plan of care as safety allows. By incorporating familiar bedtime rituals that do not compromise the client's safety, the nurse can help the client fall asleep faster and improve the overall quality of care provided to the client.