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Published on: June 11, 2014
Electrostatic potential generated during extracorporeal pump prime circulation before cardiopulmonary bypass
Haley S Newton1, Scott D Niles, James Ploessl
1University of Iowa Hospitals and Clinics, Iowa City 52242, USA.
The Journal of Extra-Corporeal Technology
|May 10, 2007
Summary
Cardiopulmonary bypass (CPB) using roller pumps with PVC tubing generates significant electrostatic discharge (ESD) exceeding 600V. Centrifugal pumps do not produce measurable charge, highlighting a risk to sensitive electronic components during extracorporeal circulation.
Area of Science:
- Biomedical Engineering
- Medical Device Technology
- Cardiovascular Surgery
Background:
- Electrostatic potentials from cardiopulmonary bypass (CPB) using polyvinylchloride (PVC) tubing and roller pumps are known.
- Electrostatic discharge (ESD) damage has been reported for gas transfer devices but not extensively for electronic components in extracorporeal circulation.
- Understanding triboelectric potential generation is crucial for CPB hardware integrity.
Purpose of the Study:
- To quantify the triboelectric potential generated by a primed, circulating adult CPB pump before CPB initiation.
- To compare charge generation between roller pump and centrifugal pump configurations in CPB circuits.
Main Methods:
- Two identical adult CPB circuits were assembled: one with a roller pump, the other with a centrifugal pump.
- Primed circuits were circulated at varying flow rates (1-6 LPM).
- Generated triboelectric potentials were measured using a digital multimeter (Fluke 8062 A).
Main Results:
- The roller pump configuration generated electrostatic discharge (ESD) exceeding 600 DC Volts.
- The centrifugal pump configuration produced no measurable electrical charge.
- High ESD potentials pose a risk to sensitive electronic components in CPB hardware.
Conclusions:
- Roller pumps in CPB circuits utilizing PVC tubing can generate substantial electrostatic potentials.
- Centrifugal pumps offer a safer alternative regarding electrostatic charge generation.
- Implementing charge dissipation measures may mitigate ESD-induced damage to CPB electronic components.
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