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Reducing cerebral emboli during cardiopulmonary bypass
Kriengchai Prasongsukarn1, Michael A Borger
1Division of Cardiovascular Surgery, Toronto General Hospital and Department of Surgery, University of Toronto, Toronto, Ontario, Canada.
Insights
Neurologic injury after cardiac surgery is often caused by cerebral embolization during cardiopulmonary bypass. Reducing these emboli through multidisciplinary strategies can decrease patient complications.
Area of Science:
- Neurology
- Cardiology
- Surgery
Background:
- Neurologic injury is a frequent complication of cardiac surgery.
- It leads to significant morbidity, mortality, and increased healthcare costs.
- Manifestations range from neurocognitive dysfunction to stroke.
Purpose of the Study:
- To discuss the pathophysiology of neurologic injury post-cardiac surgery.
- To explore methods for reducing cerebral embolization during cardiopulmonary bypass (CPB).
Main Methods:
- Review of existing evidence on neurologic injury and cerebral embolization during CPB.
- Discussion of advancements in perfusion technology, CPB techniques, and surgical strategies.
- Emphasis on a multidisciplinary approach for diagnosis and therapy.
Main Results:
- Cerebral embolization during CPB is identified as a principal cause of neurologic complications.
- Emboli composition includes atherosclerotic debris, calcium, air, fat, and thrombi.
- Advancements in CPB may reduce neurologic injury.
Conclusions:
- Reducing cerebral emboli and subsequent neurologic injury during CPB is crucial.
- A multidisciplinary approach involving anesthesia, surgery, and perfusion is necessary.
- Minimizing emboli should be a key focus for future research.
Abstract:
Neurologic injury is a common complication of cardiac surgery and is associated with significant morbidity, mortality, and resource utilization. The incidence varies widely according to the definition used, patient age, and complexity of surgery. The manifestations of neurologic injury are broad, ranging from subtle neurocognitive dysfunction to frank stroke. An increasing amount of evidence points to cerebral embolization during cardiopulmonary bypass (CPB) as the principal etiologic factor of these neurologic complications. Cerebral emboli may be composed of atherosclerotic debris, calcium, air, fat, platelet thrombi, or CPB tubing. Advancements in perfusion technology, CPB techniques and surgical strategies may lead to a reduction in neurologic injury during cardiac surgery. In the current paper, we discuss the pathophysiology of neurologic injury after cardiac surgery and methods of reducing cerebral embolization. Reducing emboli and neurologic injury during CPB requires a multidisciplinary approach that includes several simple diagnostic and therapeutic strategies. Reducing cerebral emboli should be a major goal for future research in the fields of cardiac anesthesia, surgery and perfusion.
