title: [The conclusions from an analysis of 9 approaches to determining the value of KT/Vur].
abstract: Causes underlying different results in estimation of KT/V (ur) according to 9 mathematical models are analyzed. These models are the following: 1) classic approach F.A. Gotch, 2) estimation according to E.G. Lowrei, KT/V = KT/0.6* (body mass), 3) according to R.M. Hakim, KT/V = ln(CoC), 4) according to K.K. Jindal, KT/V = 0.04*(1 - C/Co)*100% - 1.3; 5), 5) according to P. Calzavara, KT/V = (Co - C)*2/(Co + C), 6) according to J.T. Daugirdas, KT/V = ln[C/Co - 0.03 - UF/(dry mass), 7) according to C. Basile, KT/V = 0.023(1- C/Co*100%- 0.284, 8) according to P. Malchesky, 9) according to L. Garred et. al. Basing on the results of examination of a random sample of 120 patients on chronic dialysis it is inferred that the results obtained according to the approaches 1, 3 and 5 are more dependent on emergence of water sectors during the procedure leading to underestimation of KT/V value. In approaches 2, 8 and 9 the dialysis "dose" is estimated with minimal error. It is believed insufficient to estimate dialysis adequacy by KT/V only. It is proposed to make allowances also for the value of the ratio of true to apparent volume of urea distribution. The estimation should be made according to the formula: V/V = ln(Co/C)*0.6* (body mass)/KT.
authors.forename: A I
authors.initials: AI
authors.lastname: Novikov
authors.forename: A E
authors.initials: AE
authors.lastname: Ermolenko
authors.forename: A B
authors.initials: AB
authors.lastname: Kosyrev
mesh_terms: D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood / Q000628:therapy; D008962:Models, Theoretical; D006435:Renal Dialysis / Q000379:methods / Q000706:statistics & numerical data*; D013997:Time Factors; D014508:Urea / Q000097:blood*
chemical_list: D014508:Urea