# stdKtV Calculator > Dialysis treatment time calculator based on KDOQI guidelines. (iPhone/iPad app by Tammy Sirich.) - Source: https://appshunter.io/ios/app/stdktv-calculator/id1515136543 (this page in markdown: same URL + `.md`) - Developer: [Tammy Sirich](https://appshunter.io/developer/1691569380) - Category: Health & Fitness - Price: Free - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 12.4 · 1 MB - Languages: English - Released: 2021-06-17 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/stdktv-calculator/id1515136543/reviews.md ## What is stdKtV Calculator? The app estimates the treatment times required to reach a target stdKt/V calculated according to the 2015 Update of the KDOQI Clinical Practice Guidelines for Hemodialysis Adequacy. The app first requires an estimate of the urea distribution volume. A physician can either enter a urea volume obtained from the provider's monthly report or enter the patient's age, gender, weight, and height to obtain the body water volume calculated by the Watson formula. The physician next enters the current treatment time, spKt/V, Kru, estimated weekly fluid gain, and a target stdKt/V. The default target stdKt/V is 2.3 as recommended in the 2015 Update. Different values, however, can be entered. From these entered values the app calculates the treatment times required to reach the target stdKt/V if frequency is maintained at three treatments a week and if frequency is reduced to two treatments a week. The app provides an alert if the suggested treatment times would result in fluid removal rates in excess of a commonly cited maximum of 13 ml/kg/hr. Further description of the app is available at: https://profiles.stanford.edu/tammy-sirich?tab=research-and-scholarship Disclaimer: the app should not be used as a substitute for medical advice by an appropriately qualified health care provider. Stanford University is not responsible for any medical decisions based on use of the app The project also has two options: the user can input the patient values by using the urea distribution volume, if known. Otherwise, the user can use the physical parameters of the patient, such as age, weight, height, gender by birth, to calculate an estimated urea distribution volume to then further calculate the estimated time at which the patient should be under dialysis to achieve the target stdKt/V. Also note that the program uses body water volume and the Watson equations to get an estimate of the urea distribution volume. Disclaimer: the app should not be used as a substitute for medical advice by an appropriately qualified health care provided. Stanford University is not responsible for any medical decisions based on use of the app. Further description of the app is available at: https://profiles.stanford.edu/tammy-sirich?tab=research-and-scholarship ## Key features - Estimates dialysis treatment times - Calculates stdKt/V based on KDOQI guidelines - Uses Watson formula for body water volume - Alerts for excessive fluid removal rates - Supports manual urea distribution volume input ## Frequently asked questions about stdKtV Calculator ### What is the primary function of stdKtV Calculator? stdKtV Calculator estimates the necessary dialysis treatment times to achieve a specific stdKt/V target, following the 2015 KDOQI guidelines. It helps in planning treatment frequency and duration for hemodialysis patients. ### How does stdKtV Calculator calculate body water volume? The app utilizes the Watson formula, incorporating patient parameters such as age, gender, weight, and height, to estimate the body water volume. This is a crucial step in determining the urea distribution volume for treatment calculations. ### What is the default target stdKt/V in stdKtV Calculator? The default target stdKt/V in stdKtV Calculator is 2.3, as recommended by the 2015 Update of the KDOQI Clinical Practice Guidelines for Hemodialysis Adequacy. However, users can input different target values if needed. ### Does stdKtV Calculator provide warnings about fluid removal? Yes, stdKtV Calculator provides an alert if the calculated treatment times would lead to fluid removal rates exceeding a commonly cited maximum of 13 ml/kg/hr. This helps prevent potential complications for patients. ### Can I input known urea distribution volume into stdKtV Calculator? Yes, stdKtV Calculator offers two input options. You can either enter the patient's physical parameters to calculate the urea distribution volume or directly input a known urea distribution volume from a provider's report. ### On which devices can I use stdKtV Calculator? stdKtV Calculator is available for iPhone and iPad devices. It is designed to be used on Apple's mobile operating systems. ### How often is stdKtV Calculator updated? stdKtV Calculator was last updated on June 18, 2021, with version 1.0. Further updates would depend on the developer's release schedule and any necessary guideline changes. ### Is stdKtV Calculator suitable for all ages? stdKtV Calculator has an age rating of 4+, indicating it is suitable for general use. However, its clinical application is intended for healthcare professionals managing adult hemodialysis patients. ## Version history (last 1 release) ### 1.0 — 2021-06-18 No release notes. ## Related topics [stdktv calculator](https://appshunter.io/ios/topics/stdktv-calculator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*