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Automatic hemodialysis prescriptions by urea kinetic modeling
1Savonlinna Central Hospital, Savonlinna, Finland.
Hemodialysis International. International Symposium on Home Hemodialysis
|March 2, 2019
Summary
A new computer model can automatically generate personalized hemodialysis (HD) prescriptions. This tool optimizes dialysis schedules by analyzing urea kinetics, potentially reducing treatment frequency for many patients.
Area of Science:
- Nephrology
- Biomedical Engineering
- Mathematical Modeling
Background:
- Hemodialysis (HD) dosing relies on urea kinetics, often modeled mathematically.
- Equivalent continuous clearance allows comparison of different HD schedules.
Purpose of the Study:
- To develop and evaluate an automated computer program for generating HD prescriptions.
- To assess the feasibility of optimizing HD schedules based on individual urea kinetics.
Main Methods:
- A computer program was developed to automatically generate HD prescriptions.
- Urea kinetics (volume, generation rate, concentration) were computed for 33 patients using ionic dialysance.
- Dialyzer in vivo mass area coefficient (K0A) was calculated using Michaels' equation.
Main Results:
- The model generated new prescriptions meeting 12 technical and guideline criteria.
- 72 out of 200 sessions indicated a potential decrease in dialysis frequency.
- Adjusting renal urea clearance calculations further reduced the required treatment frequency in some cases.
Conclusions:
- The developed model produced plausible, individualized HD prescriptions.
- Inaccuracies in K0A determination require further investigation.
- The model needs validation with modern equipment and patient data before clinical integration.
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