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Clinical evaluation of a microporous membrane oxygenator
The Journal of Cardiovascular Surgery
|January 1, 1977
Summary
This study evaluated a microporous membrane oxygenator for cardiac surgery. The device demonstrated satisfactory performance in 90 cases, with precautions noted for carbon dioxide and water vapor management.
Area of Science:
- Biomedical Engineering
- Cardiovascular Surgery
Background:
- Microporous membrane oxygenators are crucial for cardiopulmonary bypass.
- Optimizing gas exchange and managing potential complications are key challenges.
Purpose of the Study:
- To assess the performance and safety of a specific microporous membrane oxygenator during cardiac surgery.
- To identify optimal ventilation strategies and necessary precautions for its use.
Main Methods:
- Evaluation of a microporous membrane oxygenator with a 400 ml priming volume.
- Clinical application in 90 cardiac surgery cases with perfusion times up to 9 hours.
- Monitoring of oxygen (O2) and carbon dioxide (CO2) transfer efficiency.
Main Results:
- The oxygenator achieved satisfactory performance in 90 cardiac surgery cases.
- Oxygen transfer capacity was up to 250 ml/min.
- Excessive CO2 removal occurred with 100% O2 ventilation, necessitating CO2 addition to the ventilating gas.
- Precautions were identified to prevent water vapor accumulation.
Conclusions:
- The microporous membrane oxygenator is effective for cardiac surgery.
- Careful management of ventilating gas composition (including CO2) and prevention of water vapor buildup are essential for safe operation.