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Dialysis Efficiency (Kt/V) Calculator

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If you are on dialysis, is it working for you? You should begin to feel better when your blood is getting adequately cleaned. Use this calculator to check if your dialysis session was efficient. Kt/V and Urea Reduction Ratio (URR) are two parameters used to measure the adequacy of dialysis, and consequently dialysis dose. Kt/V indicates the amount of blood cleared of urea and Urea Reduction Ratio is the percentage of urea cleared from your body.

Ideally Kt/V must be greater than 1.2 and URR must be above 65%
. Dialysis Efficiency (Kt/V) Calculator
Enter the details
Pre-dialysis BUN
(BUN = Blood Urea Nitrogen)
Post-dialysis BUN
(BUN = Blood Urea Nitrogen)
(measured 2 to 5 minutes after the end of dialysis)
Dialysis time
Ultrafiltration Volume
Postdialysis Weight
* All fields are mandatory.

What is Kt/V?

Like any other medication or treatment, dialysis also has to be tailored to meet the requirements of the patient. The parameter that helps the doctors find out if the dialysis you are receiving is adequate is Kt/V. It is the ratio of urea clearance (K) multiplied by dialysis time (t) to the volume of water in your body. Kt/V values can be improved by either increasing blood flow rate through the dialyser, which increases urea clearance, or by increasing the duration of dialysis sessions.

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Posted by:  surendar, India  Posted on: 4/3/2013
Dear, kschen. The calculator has been updated. Please try and provide your feedback. This calculator uses updated Daugirdas Formula to calculate KT/V. So you don't need to key in your pre-dialysis weight. Your ultra-filtration volume gives that. This formula is widely used to calculate kt/v. I request you to key in correct values. The result will be pretty close to what's shown in the dialysis machine.
Posted by:  kschen, Malaysia  Posted on: 2/7/2011
U only asked for the postdialysis weight.How about the predialysis weight?.Is it not important? What has Ultrafiltration got to do with the calculation? The result as shown is way out compared with the result as shown by the Dialysis machine.Thank you
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