A nurse is caring for a group of clients diagnosed with polycystic kidney disease (PKD). While teaching about ways to slow the progression to end-stage renal disease (ESRD), which of the following topics would be most important for the nurse to include?

A. Pain management: Clients with PKD often experience chronic pain due to cyst enlargement and renal distension, which requires effective management for quality of life. However, treating pain does not directly influence the biological rate of cyst growth or glomerular decline. Pain management is a supportive intervention rather than a disease-modifying strategy for renal preservation. B. Blood glucose control: While glycemic control is vital for clients with diabetes to prevent diabetic nephropathy, it is not the primary driver of disease progression in PKD. PKD is a genetic structural disorder characterized by the proliferation of fluid-filled cysts. The focus for these specific patients remains on factors that directly aggravate cystic renal damage. C. Blood pressure control: Hypertension is both a common manifestation and a major accelerator of renal failure in polycystic kidney disease. Maintaining a blood pressure ≤ 130/80 mmHg reduces the mechanical stress on renal vasculature and slows the expansion of cysts. Aggressive blood pressure management is the most effective way to preserve residual nephron function. D. Fluid restriction: In the early to middle stages of PKD, clients are often encouraged to increase fluid intake to suppress vasopressin, which can slow cyst growth. Restricting fluids prematurely can lead to dehydration and further renal strain unless the client has reached end-stage renal disease with oliguria. High fluid intake is generally therapeutic in this specific pathology.