Dry weight information in PD therapy is used to?

• A. To determine current fluid status and guide ultrafiltration targets to achieve euvolemia
• B. To measure blood pressure
• C. To schedule clinic visits
• D. To determine the exact kidney function

Answer: (A)

Dry weight represents the post-dialysis weight at which the patient is euvolemic—that is, has no excess fluid. In PD, using this value as a reference helps determine how much fluid should be removed with each exchange to maintain or restore normal fluid status. By comparing current weight and signs of fluid overload to the dry weight, the clinician can set ultrafiltration targets and adjust the PD prescription (dialysate volume and concentration, dwell times) to achieve euvolemia, which supports stable blood pressure, less edema, and reduced cardiac strain. Dry weight is not a direct measure of blood pressure, it isn’t used to schedule clinic visits, and it doesn’t indicate exact kidney function, which is assessed by other tests and clinical signs.