CRRT effluent dose + citrate-Ca ratio
CRRT effluent dose (KDIGO 2012 target 20-25 mL/kg/h) from weight and prescribed effluent rate, with optional citrate-circuit calcium ratio (Davenport 2009 targets, mmol/L).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Patient weight
- 80 kg
- Prescribed effluent rate
- 1800 mL/h
- Modality
- CVVHDF
Result: Delivered effluent dose 22.5 mL/kg/h within KDIGO 2012 target 20-25 mL/kg/h.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Effluent dose <20 mL/kg/h
- Below KDIGO 2012 target.
- Effluent dose 20-25 mL/kg/h
- Within KDIGO 2012 target.
- Effluent dose >25 mL/kg/h
- Above KDIGO 2012 target.
- Total/ionized Ca >=2.5
- Citrate accumulation suspected per Davenport 2009.
What you enter
- Patient weight
- Prescribed effluent rate
- Modality
- Ultrafiltration
- Systemic ionized Ca
- Post-filter ionized Ca
- Total Ca
How this is calculated
KDIGO AKI Work Group. KDIGO Clinical Practice Guideline for Acute Kidney Injury. Kidney Int Suppl. 2012;2(1):1-138 (sec 5.8 effluent 20-25 mL/kg/h). Davenport A, Tolwani A. Citrate anticoagulation for CRRT in AKI. NDT Plus. 2009;2(6):439-447 (citrate-Ca targets). Read the sources: KDIGO 2012 ↗, Davenport 2009 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.