A nurse is assessing a client who has chronic kidney disease for fluid volume increase. Which of the following provides a reliable measure of fluid retention?

Choice A reason: Sodium levels may fluctuate in chronic kidney disease but do not reliably reflect fluid retention. They can be influenced by dietary intake, medications, and dilutional effects, making them an indirect and inconsistent marker. Choice B reason: Tissue turgor is a subjective assessment and may be affected by age, skin elasticity, and nutritional status. It is not a precise or reliable indicator of fluid volume changes in CKD. Choice C reason: Intake and output tracking is useful but can be inaccurate due to measurement errors, insensible losses, or incomplete documentation. It provides a general picture but lacks the precision of weight monitoring. Choice D reason: Daily weight is the most reliable and objective measure of fluid retention. A sudden increase in weight over 24–48 hours often indicates fluid accumulation. In CKD, where fluid overload can lead to hypertension and pulmonary edema, daily weight monitoring is essential for early detection and intervention.