Medindia LOGIN REGISTER
Medindia
Advertisement

Dialysis Efficiency (Kt/V) Calculator

Developed by Medindia Content Team | Calculator Reviewed by Dr. Sunil Shroff, MBBS, MS, FRCS (UK), D. Urol (Lond) on Aug 29, 2021

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%

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.
Advertisement

Additional Information

It is important to ensure that your dialysis sessions are consistently efficient. You may not immediately feel the harmful effects of waste materials building up in your body, but some symptoms can help you figure out if you are receiving inadequate dialysis.

Watch out for:


There are some simple methods to ensure that you get adequate dialysis.
  • Be on time for your dialysis sessions
  • Make sure you stay till the end of the treatment session
  • Don't settle for lesser treatment time in case the staff wants to leave
  • Ensure you make up for time lost during bathroom trips or machine breakdowns
  • If you feel uneasy or restless towards the end don't hesitate to ask for help
  • Take note of how many times a dialyser is being reused and note down when you get a new dialyser.
  • Ensure that a new dialyser is rinsed well with saline before use
  • Try to get a new dialyser if you feel a reused one is not working for you
  • Strictly follow the fluid intake limits between sessions

Advertisement

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.

Post a Comment

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.

Comments

nancy-mathias

I just want to know will any complimentary therapies like music and mindfulness along with HD will have an effect on Kt/V???

memee2009

This article I notice may be for hemodialysis patients?

d.-warner

My husband does home treatments, his kt/v is in the range of 2.6-2.7 his last month's adequacy readings were 1.8 as told to me by his nurse...she requested that he repeat the test...it came back the same. We go for his monthly clinic visit next week...Question: should I be worried?

Goldsboropiper, United States

My wife is on PD. Normally her KT/V is in the range of 2.5-2.9 but her last Adequacy test results were .95. Is it normal for a patient to occasionally not have a good reading? Is this something to worry about? We haven't changed her routine.

surendar, India

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.



Advertisement

Recommended Readings on Dialysis Efficiency

Test Your Knowledge on Kidney Transplantation
Introduction: Kidney transplantation is a surgical procedure done to remove a diseased kidney and replace it with a healthy one from a donor. A person requires one healthy functioning kidney to keep the body functions normal ( ...
Corrected Sodium Calculator
Corrected Sodium Calculator calculates sodium required to overcome hyponatremia due to hyperglycemia. Hyponatremia is caused if the sodium level falls below 135 mEq/L (mmol/L).
Continuous Ambulatory Peritoneal Dialysis (Dialysis , Haemodialysis ) Drugs
View list of generic and brand names of drugs used for treatment of Continuous Ambulatory Peritoneal Dialysis (Dialysis , Haemodialysis ). You can find more information including dosage, side effects of the Continuous Ambulatory Peritoneal Dialysis ...
Quiz on Kidney
How healthy are your kidneys? Is it possible to lead healthy lives with just a single kidney? Learn more by taking part in this ...
Kidney Transplantation
Since the early times, the novel idea of transplanting tissues and other body parts from one organism to the other has captured the imagination of successive generations.
Dialysis
Dialysis is an artificial process for removing excess water and waste from the blood. Hemodialysis and peritoneal dialysis are the types of dialysis.
Protein Catabolic Rate
Find out breakdown rate of proteins in patients suffering from kidney problem and for those undergoing dialysis.
Creatinine Clearance
Medindia presents you a calculator for measuring the corrected creatinine clearance, based on your height and weight.
Time Averaged Concentration of Urea
This calculator gives you the average concentration of urea, which is calculated with the value of blood urea nitrogen (BUN), in terms of mg/dl, before and after dialysis.
Advertisement
Advertisement
Health Calculators A-Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Clinical Tools
View all
Advertisement
Advertisement

Benefits of Registration
Advertisement

This site uses cookies to deliver our services.By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use  Ok, Got it. Close