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Updated: Aug 17, 2026

Closure of a Patent Foramen Ovale (PFO): An Intervention Sequence
Published on: December 23, 2022
Paradoxical embolism with a patent foramen ovale and atrial septal aneurysm
D J Beacock1, V B Watt, G D Oakley
1Department of Cardiology, Chesterman Wing, Northern General Hospital, Herries Road, Sheffield, S5 7AU, UK.
Abstract:
Patent foramen ovale (PFO) and atrial septal aneurysm have been cited as potential risk factors for cryptogenic stroke. We present two cases which we propose to directly illustrate paradoxical embolisation as a mechanism of cerebrovascular accident. The diagnosis of PFO is discussed and the literature reviewed.
Insights
Patent foramen ovale (PFO) and atrial septal aneurysm are potential risks for cryptogenic stroke. These cases illustrate paradoxical embolization as a cerebrovascular accident mechanism, discussing PFO diagnosis and literature.
Area of Science:
- Cardiology
- Neurology
- Vascular Medicine
Background:
- Cryptogenic stroke is a significant clinical challenge.
- Patent foramen ovale (PFO) and atrial septal aneurysm are implicated as risk factors.
- Understanding the mechanisms of stroke is crucial for prevention.
Observation:
- Two distinct cases of cryptogenic stroke are presented.
- These cases provide direct illustration of paradoxical embolization.
- The role of PFO in paradoxical embolization is highlighted.
Findings:
- Paradoxical embolization via PFO is demonstrated as a mechanism for cerebrovascular accidents.
- Diagnostic approaches for PFO are discussed.
- The findings support the link between specific cardiac anomalies and stroke.
Implications:
- Improved diagnostic strategies for PFO may aid in stroke risk stratification.
- Understanding paradoxical embolization can lead to targeted therapeutic interventions.
- Further research into cardiac-neurologic connections is warranted.
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