To Be or Not to Be Patent: The Relationship Between Migraine and Patent Foramen Ovale
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Updated: Apr 8, 2026

Closure of a Patent Foramen Ovale PFO: An Intervention Sequence
Published on: December 23, 2022
Nihan Kahya Eren1, Nazlı G Bülbül2, Selcen Yakar Tülüce1
1Cardiology Department, Izmir Katip Celebi University Ataturk Education and Research Hospital, Izmir, Turkey.
Objective/Background:
Migraine is a common neurological disorder with an uncertain pathogenesis. A pathophysiological link has been proposed between the migraine headache and patent foramen ovale (PFO). However, the data about the association of migraine with the presence of PFO are conflicting. The study aims to prospectively investigate the prevalence of PFO in patients with migraine compared with that of control subjects.
Methods:
A total of 203 migraineous patients and 212 control subjects with similar demographic characteristics to that of case subjects regarding age and gender were included in the study. Transthoracic echocardiography with agitated saline injection was used to evaluate the presence of PFO. PFO was judged to be present if any microbubble was seen in the left cardiac chambers within the first 5 cardiac cycles from the maximum right atrial opacification at rest or after provocative maneuvers.
Results:
Mean age of the patients was 37.2 ± 9.8 years and 93% were female. Migraine with aura was present in 32% (n = 65) of the patients. The prevalence of PFO was similar in patients with migraine and the control subjects (42% vs 44%; odds ratio 0.90, 95% confidence interval 0.61-1.33, P = .61). Likewise, the prevalence of PFO was similar in migraineurs patients with or without aura (41% vs 42%; odds ratio 0.95, 95% confidence interval 0.51-1.76, P = .87).
Conclusion:
This study suggest that PFO is not more common in patients with migraine compared with healthy subjects. Therefore, our findings suggest that the relationship between migraine headache and the presence of PFO is questionable.
Insights
This study found no significant difference in the prevalence of patent foramen ovale (PFO) between migraine patients and healthy individuals. The findings question the proposed link between PFO and migraine headaches.
Area of Science:
- Neurology
- Cardiology
- Medical Diagnostics
Background:
- Migraine is a common neurological disorder with an unclear cause.
- A potential link between migraine and patent foramen ovale (PFO) has been suggested, but existing data are conflicting.
- This study aimed to clarify the association between PFO and migraine.
Purpose of the Study:
- To prospectively investigate the prevalence of PFO in migraine patients compared to control subjects.
- To determine if PFO is more common in individuals experiencing migraines.
- To assess the association between PFO and migraine with or without aura.
Main Methods:
- Transthoracic echocardiography with agitated saline injection was used to detect PFO.
- 203 migraine patients and 212 age- and gender-matched controls were enrolled.
- PFO presence was confirmed by observing microbubbles in cardiac chambers after saline injection, with and without provocative maneuvers.
Main Results:
- The prevalence of PFO was similar in migraine patients (42%) and control subjects (44%).
- No statistically significant difference in PFO prevalence was observed between migraineurs with aura (41%) and without aura (42%).
- The odds ratio for PFO in migraine patients was 0.90 (95% CI 0.61-1.33, P=.61).
Conclusions:
- The study suggests that PFO is not more prevalent in migraine patients compared to healthy individuals.
- The findings indicate that the proposed pathophysiological link between migraine and PFO may be questionable.
- Further research is needed to fully understand the complex relationship between PFO and migraine.
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