🩺 spKt/V (Daugirdas) Dialysis Adequacy
UseWhen to use: thrice-weekly HD adequacy review with pre/post BUN, time, UF, and post weight.
StrataCompare to local guideline targets (often ≥1.2–1.4); residual function and schedule matter.
LimitsWhen not to use: access recirculation / rebound ignored. · Pitfall: mismatched urea units. · eKt/V ≠ spKt/V.
SourceDaugirdas JT. Second generation logarithmic estimates of single-pool variable volume Kt/V
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
Daugirdas spKt/V.
When to use
When to use: thrice-weekly HD adequacy review with pre/post BUN, time, UF, and post weight.
How it works
spKt/V = −ln(R − 0.008t) + (4 − 3.5R)×(UF/W).
Key points
- Daugirdas spKt/V.
- Also shows URR.
- Next: schedule / access check.
References
- Daugirdas JT. Second generation logarithmic estimates of single-pool variable volume Kt/V
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Pre-dialysis BUN / urea | 60 same units |
|---|---|
| Post-dialysis BUN / urea | 18 same units |
| Session length | 4 hours |
| UF volume | 2.5 L |
| Post-dialysis weight | 70 kg |
→spKt/V1.42
- R (post/pre)：0.300
- URR：70.0%
- Cue：>=1.4 — meets common thrice-weekly spKt/V adequacy cue (guideline-dependent)
Verification & sources · governance
FAQ
Frequently asked questions
- Does spKt/V (Daugirdas) Dialysis Adequacy upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is spKt/V (Daugirdas) Dialysis Adequacy calculated in practice? Can you show a worked example?
- Inputs: Pre-dialysis BUN / urea 60 same units, Post-dialysis BUN / urea 18 same units, Session length 4 hours, UF volume 2.5 L, Post-dialysis weight 70 kg → Result: spKt/V 1.42（R (post/pre): 0.300, URR: 70.0%, Cue: >=1.4 — meets common thrice-weekly spKt/V adequacy cue (guideline-dependent)）