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Anesthesia, the brain, and cardiopulmonary bypass
1Department of Anaesthesia, University Hospital, University of Western Ontario, London, Canada.
The Annals of Thoracic Surgery
|December 1, 1993
Summary
Neurologic injury after cardiac surgery with cardiopulmonary bypass is linked to microemboli. Arterial line filtration and specific management strategies may reduce postoperative cognitive dysfunction.
Area of Science:
- Neurology
- Cardiology
- Neurosurgery
Background:
- Cardiac operations using cardiopulmonary bypass can lead to neurologic injury.
- Microemboli from pump oxygenators are a significant factor in post-operative neurologic dysfunction.
Purpose of the Study:
- To review the etiology and incidence of neurologic injury after cardiopulmonary bypass.
- To evaluate strategies for mitigating post-operative neurologic dysfunction, including arterial line filtration and pH management.
- To discuss the efficacy of neuroprotective agents in reducing cognitive dysfunction.
Main Methods:
- Review of existing studies on neurologic injury post-cardiac operations.
- Analysis of data on microemboli, arterial line filtration, and pH management strategies.
- Examination of research on neuroprotective agents like thiopental, nimodipine, and nafamostat.
Main Results:
- Microemboli from pump oxygenators contribute to cerebral circulation issues.
- Arterial line filtration shows efficacy in reducing emboli and post-operative neuropsychological dysfunction.
- Different pH management strategies impact cerebral blood flow and the incidence of cognitive dysfunction.
Conclusions:
- Strategies such as arterial line filtration and optimized pH management are crucial for reducing neurologic injury after cardiopulmonary bypass.
- Further research into neuroprotective agents may offer additional benefits in preventing post-operative cognitive dysfunction.