Loading
The percentage reduction in blood urea nitrogen (BUN) during a single hemodialysis session, used as a screening measure of dialysis adequacy.
URR is calculated as (pre-dialysis BUN − post-dialysis BUN) / pre-dialysis BUN × 100. The KDOQI minimum target is URR ≥65%, which roughly corresponds to a single-pool Kt/V of 1.2. URR is simpler than Kt/V because it requires only two BUN measurements and no time, weight, or ultrafiltration inputs — but it does not account for urea rebound, ultrafiltration, or treatment time, making Kt/V the preferred measure. Use the free URR calculator to check adequacy quickly.
A dimensionless number used to quantify dialysis adequacy, where K = dialyzer clearance, t = treatment time, and V = volume of distribution of urea.
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.
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.
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.
Advertisement
ZuvFlo is ready to integrate with your facility to streamline operations, automate compliance, and deliver better patient care.
No credit card required • Setup in under 2 hours • Cancel anytime
Advertisement
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.