ToolsCalculators
Kt/V for haemodialysis adequacy (Daugirdas)
Single-pool Kt/V from pre/post urea, time and fluid removal.
Kt/V for haemodialysis adequacy (Daugirdas)
Pre-dialysis BUN (urea nitrogen)
mg/dL
Post-dialysis BUN (urea nitrogen)
mg/dL
Dialysis session length
hours
Ultrafiltration volume removed
L
Post-dialysis weight
kg
Complete the fields above to see the result.
When to use
- Assessing delivered dose of thrice-weekly intermittent haemodialysis.
Formula
Kt/V = -ln(R - 0.008 x t) + (4 - 3.5 x R) x UF/W, where R = post/pre BUN, t = hours, UF = litres removed, W = post-dialysis weight (kg).
Pearls and pitfalls
- Guidelines target single-pool Kt/V >=1.2 per session for three-times-weekly schedules.
- Accurate post-dialysis BUN sampling (slow flow/stop-pump technique) avoids overestimating clearance.