Related Experiment Video
Updated: Jan 25, 2026
06:40
Operant Conditioning Task to Measure Song Preference in Zebra Finches
Published on: December 26, 2019
6.9K
A swan song for Kt/Vurea
Raymond Vanholder1, Wim Van Biesen1, Norbert Lameire1
1Nephrology Section, Department of Internal Medicine, University Hospital Ghent, Ghent, Belgium.
Seminars in Dialysis
|April 27, 2019
Summary
Kt/V, a measure of dialysis adequacy, is outdated due to conceptual flaws and lack of evidence. Focusing on factors like residual kidney function and patient well-being offers a better approach for dialysis patients.
Area of Science:
- Nephrology
- Renal Replacement Therapy
- Dialysis Adequacy
Background:
- Kt/V has been a standard index for dialysis adequacy for over 30 years.
- This metric measures dialyzer clearance of urea multiplied by dialysis time, normalized for urea distribution volume.
Purpose of the Study:
- To review the limitations and flaws of Kt/V as an index of dialysis adequacy.
- To argue for the obsolescence of Kt/V and propose alternative focuses for improving patient outcomes.
Main Methods:
- Literature review of randomized controlled trials (RCTs) and existing conditions where Kt/V has been shown to be flawed.
- Analysis of the conceptual basis and empirical evidence supporting Kt/V.
Main Results:
- Lack of proof of concept for Kt/V in three major RCTs.
- Numerous identified conditions where the Kt/V concept is fundamentally flawed.
- Kt/V is demonstrated to be an obsolete indicator of dialysis adequacy.
Conclusions:
- Kt/V is no longer a reliable or relevant measure of dialysis adequacy.
- Future efforts should prioritize optimal dialysis dose for quality of life.
- Factors such as residual renal function, volume status, and dialysis parameters significantly impact patient outcomes more than Kt/V.
