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The assessment of whether dialysis treatment provides sufficient clearance of waste products and fluid removal to maintain patient health and quality of life, measured primarily by Kt/V and clinical outcomes.
Dialysis adequacy encompasses both small solute clearance (measured by Kt/V or URR) and middle molecule clearance (beta-2 microglobulin), fluid balance management, electrolyte normalization, acid-base balance, blood pressure control, anemia management, nutritional status, and patient-reported outcomes. The minimum adequacy standards per KDOQI: spKt/V ≥1.2 for thrice-weekly HD, eKt/V ≥1.0 (corrected for rebound). For PD, weekly Kt/V target is ≥1.7 per KDOQI. Achieving adequacy requires optimizing prescription parameters: blood flow rate (Qb 300-400 mL/min), dialysate flow rate (Qd 500-800 mL/min), treatment time (≥4 hours), dialyzer type, and dialysis frequency.
A dimensionless number used to quantify dialysis adequacy, where K = dialyzer clearance, t = treatment time, and V = volume of distribution of urea.
A simplified Kt/V calculation that models the body as a single urea compartment without accounting for urea rebound after dialysis, commonly used for routine adequacy monitoring.
A medical procedure that filters waste products, excess fluids, and toxins from the blood using a dialysis machine when the kidneys can no longer perform this function adequately.
The percentage reduction in blood urea nitrogen (BUN) during a single hemodialysis session, used as a screening measure of dialysis adequacy.
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.