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. Blood pressure control. Hypertension is both a common symptom and a primary driver of disease progression in polycystic kidney disease. Elevated systemic pressure accelerates cyst growth and glomerular damage, leading to a faster decline in renal function. Managing blood pressure, often with ACE inhibitors, is the most effective intervention to delay ESRD. B. Fluid restriction. In the early to middle stages of PKD, fluid intake is actually encouraged to help suppress vasopressin, which can stimulate cyst growth. Strict fluid restrictions are generally reserved for patients who have already reached end-stage renal failure with oliguria. Early restriction is not a standard strategy for slowing the initial progression of cyst expansion. C. Blood glucose control. While glycemic control is vital for diabetic nephropathy, it is not the primary mechanism for managing autosomal dominant polycystic kidney disease. PKD is a genetic structural disorder characterized by fluid-filled cysts rather than metabolic basement membrane thickening. Blood pressure management remains a more significant factor in preserving nephron longevity for these patients. D. Pain management. Chronic pain from enlarging cysts and internal hemorrhage is a major quality-of-life issue for patients with PKD. However, while essential for comfort, analgesic administration does not physiologically slow the underlying biological progression of the disease or the decline in GFR. Blood pressure regulation directly addresses the vascular and structural stressors that destroy renal tissue.