Kt/V (Daugirdas)
Info
Post. Dia. Wt. (kg)
Ultrafiltrate Vol. (L)
Predialysis BUN
unit mg/dL mmol/L
Postdialysis BUN
unit mg/dL mmol/L
R e s u l t s
Kt/V
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Info
Kt/V (Daugirdas)

Kt/V is used to measure the adequacy of hemodialysis and peritoneal dialysis.

  • K = dialyzer clearance
  • t = time
  • V = volume distribution

Formula:

Kt/V =(-1) × log(Ratio-(0.03)) + ((4-(3.5 × Ratio)) × (UFVol/Weight))

Where,

  • Ratio = Post BUN/Pre BUN;
  • UFVol = UltrafiltrateVol

References:

  1. Daugirdas JT. Second generation logarithmic estimates of single-pool variable volume Kt/V: an analysis of error. J Am SocNephrol. 1993;4(5):1205.
  2. Daugirdas JT. Simplified equations for monitoring Kt/V, PCRn, eKt/V, and ePCRn. AdvRen Replace Ther. 1995 Oct;2(4):295-304.
  3. Daugirdas JT. Rapid methods of estimating Kt/V: three formulas compared. ASAIO Trans. 1990 Jul-Sep;36(3):M362-4.