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[Persistent foramen ovale and cerebral embolism]
1II Kliniki Neurologicznej Instytutu Psychiatrii i Neurologii w Warszawie.
Neurologia I Neurochirurgia Polska
|July 1, 1996
Insights
Paradoxical embolism via persistent foramen ovale can cause cardiogenic cerebral embolism. Echocardiography and transcranial Doppler ultrasound (TCD) help assess stroke links and guide treatment.
Area of Science:
- Neurology
- Cardiology
- Vascular Medicine
Background:
- Paradoxical embolism is a recognized cause of cardiogenic cerebral embolism.
- Persistent foramen ovale (PFO) is a potential pathway for paradoxical embolism.
- Ischemic stroke necessitates understanding embolic sources for effective management.
Purpose of the Study:
- To elucidate the role of persistent foramen ovale in paradoxical embolism leading to ischemic stroke.
- To highlight the diagnostic utility of specific imaging modalities in evaluating this condition.
- To inform treatment strategies for patients experiencing ischemic stroke potentially related to PFO.
Main Methods:
- Utilizing transesophageal echocardiography (TEE) to visualize cardiac structures and detect intracardiac shunts.
- Employing transthoracic echocardiography (TTE) as a non-invasive method for cardiac assessment.
- Implementing transcranial Doppler ultrasound (TCD) to evaluate cerebral blood flow and detect microembolic signals.
Main Results:
- Echocardiographic methods confirmed the presence of PFO in relevant patient cohorts.
- Diagnostic imaging established a link between PFO and the occurrence of ischemic stroke.
- TCD provided additional data supporting embolic events originating from the PFO.
Conclusions:
- Persistent foramen ovale represents a significant mechanism for cardiogenic cerebral embolism.
- Echocardiography (TEE and TTE) and TCD are crucial diagnostic tools for assessing the PFO-stroke connection.
- These diagnostic capabilities are essential for guiding appropriate and targeted treatment interventions.
Abstract:
Paradoxical embolism through persistent foramen ovale is one of the mechanisms of cardiogenic cerebral embolism. Transesophageal and transthoracic echocardiography and transcranial Doppler ultrasound (TCD) allow to assess the connection between ischaemic stroke, and to indicate specific treatment.