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Errors in fluid balance with pump control of continuous hemodialysis
1Nephrology Department, Sepulveda VA Medical Center, CA.
The International Journal of Artificial Organs
|February 1, 1992
Summary
Continuous hemodialysis pump accuracy is crucial. Inaccurate fluid delivery from peristaltic and roller pumps can cause severe fluid depletion. Dedicated pump segments improve accuracy, necessitating pre-use calibration.
Area of Science:
- Nephrology
- Biomedical Engineering
- Medical Device Technology
Background:
- Continuous hemodialysis (CHD) utilizes pumps for precise fluid management, aiming to reduce nursing workload.
- Unexpected severe extracellular fluid depletion during CHD suggests potential inaccuracies in pump delivery systems.
Purpose of the Study:
- To investigate the in vitro accuracy of various pumps used in continuous hemodialysis under simulated conditions.
- To identify pump types and configurations that minimize fluid delivery errors.
Main Methods:
- In vitro testing of different pump types (peristaltic, roller, piston) under conditions mimicking continuous hemodialysis.
- Evaluation of fluid delivery accuracy based on pump type and tubing set insertion.
Main Results:
- Fluid delivery accuracy varied significantly based on pump type and tubing set insertion for peristaltic and roller pumps.
- Piston pumps and peristaltic pumps with dedicated segments demonstrated higher accuracy.
Conclusions:
- Pump selection and proper setup are critical for accurate fluid management in continuous hemodialysis.
- Calibration and testing of pumps under simulated CHD conditions are essential before clinical use to prevent patient complications.