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Calculator: Kt/V dialysis dose Daugirdas formula (SI units)*


Calculator: Kt/V dialysis dose Daugirdas formula (SI units)*

 
Input
 
BUN predialysis   mmol/L
BUN postdialysis   mmol/L
Hours  
UF volume  
Weight postdialysis  

 
Result
 
Important: Inputs must be complete to perform calculation.

 
 
Kt/V Daugirdas  
 
Decimal precision  

 
 

 
Notes
  • Kt/V is defined as the dialyzer clearance of urea (K) multiplied by the duration of the dialysis treatment (t, in minutes) divided by the volume of distribution of urea in the body (V, in mL), which is approximately equal to the total body water, corrected for volume lost during ultrafiltration.
  • BUN: blood urea nitrogen; UF: ultrafiltrate.
  • * This calculator uses SI units (Système international d'unités) as the default for inputs. Do not use this calculator if you are using conventional units (also known as US units and gravimetric units); please refer instead to the conventional units version of this calculator.

 
Equations used
 
Kt/V_Daugirdas = -ln((BUN postdialysis / BUN predialysis) - (0.008 * Hours)) + ((4 - (3.5 * BUN postdialysis / BUN predialysis)) * UF volume / Weight postdialysis)

 

 
References
  1. Kovacic V, Roguljic L, Jukic I, Kovacic V. Comparison of Methods for Hemodialysis Dose Calculation. Dial Transplant 2003; 32:170.
  2. Hemodialysis Adequacy 2006 Work Group. Clinical practice guidelines for hemodialysis adequacy, update 2006. Am J Kidney Dis 2006; 48 Suppl 1:S2.
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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