Related Experiment Videos
Simultaneous convective and diffusive mass transfers in a hemodialyser
M Y Jaffrin1, L H Ding, J M Laurent
1Department of Biological Engineering, University of Technology, Compiegne, France.
Journal of Biomechanical Engineering
|May 1, 1990
Summary
This study calculates mass transfer in hemodialysis with combined dialysis and ultrafiltration. Results show good agreement with in vitro measurements for creatinine, vitamin B12, and myoglobin clearances.
Area of Science:
- Biomedical Engineering
- Renal Physiology
Background:
- Hemodialysis is crucial for kidney failure treatment.
- Combined dialysis and ultrafiltration enhance solute removal.
- Understanding mass transfer is key to optimizing hemodialysis.
Purpose of the Study:
- To calculate mass transfer in hemodialyzers during combined dialysis and ultrafiltration.
- To develop an empirical correlation for hemodiafiltration clearance.
Main Methods:
- Integration of mass fluxes across blood and dialysate boundary layers.
- Consideration of partial solute rejection and varying flow rates.
- Calculation of clearances for creatinine, vitamin B12, and myoglobin.
Main Results:
- Calculated clearances showed good agreement with in vitro measurements.
- Clearances were dependent on blood and ultrafiltrate flow rates.
- An empirical correlation for hemodiafiltration clearance was suggested.
Conclusions:
- The model accurately predicts mass transfer during combined dialysis and ultrafiltration.
- The findings provide a basis for optimizing hemodiafiltration protocols.
- The empirical correlation can aid in predicting solute removal efficiency.