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Updated: Jun 27, 2026

Closure of a Patent Foramen Ovale (PFO): An Intervention Sequence
Published on: December 23, 2022
Prevalence of patent foramen ovale in patients with migraine
Abstract:
Cerebral embolization through a PFO is considered to be a possible cause of migraine attack, therefore the size of the PFO and its 'functional potential' should play an important etiological role in migraine. However, this relationship remains complex due to various methodological issues. We have highlighted some of the important issues related to the diagnostic methodology for PFO and the interpretation of the results. Mere detection of the presence of PFO in patients with migraine may not delineate their true relationship for a better understanding and planning a definitive treatment. There is an urgent need for standardizing the diagnostic methods as well as the criteria for the grading the 'functional status' of PFO.
Insights
Cerebral embolization via a patent foramen ovale (PFO) may trigger migraines. Standardizing PFO diagnosis and functional assessment is crucial for understanding this complex migraine cause.
Area of Science:
- Neurology
- Cardiology
Background:
- Patent foramen ovale (PFO) is a potential cause of migraine attacks.
- The size and functional potential of PFOs are thought to influence migraine etiology.
Discussion:
- Methodological issues complicate the relationship between PFO and migraine.
- Simple PFO detection in migraine patients may not confirm causality.
- Standardization of diagnostic methods and functional grading for PFO is urgently needed.
Key Insights:
- The etiological role of PFO in migraine is complex and requires further investigation.
- Current diagnostic approaches for PFO in migraineurs have limitations.
- A unified approach to PFO assessment is necessary for effective migraine management.
Outlook:
- Future research should focus on standardized diagnostic protocols for PFO.
- Developing criteria for grading PFO functional status will aid in understanding migraine pathophysiology.
- Improved PFO evaluation could lead to more targeted migraine treatments.
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