1. Multiple Choice: A patient with chronic kidney disease is undergoing hemodialysis. Which of the following dietary restrictions is most important for this patient? a) Low protein b) Low potassium c) High sodium d) High calcium Correct Answer: b) Low potassium Rationale: Patients undergoing hemodialysis often need to limit potassium in their diet to prevent hyperkalemia, which can cause cardiac dysrhythmias. 2. True/False: In patients with COPD, administering high concentrations of oxygen can lead to a decreased respiratory drive. Answer: True Rationale: COPD patients may rely on hypoxic drive to breathe, and too much oxygen can suppress this drive, leading to respiratory failur