Patent foramen ovale pathophysiology
|
Patent Foramen Ovale Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Patent foramen ovale pathophysiology On the Web |
|
American Roentgen Ray Society Images of Patent foramen ovale pathophysiology |
|
Risk calculators and risk factors for Patent foramen ovale pathophysiology |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Priyamvada Singh, M.B.B.S. [2]; Assistant Editor-In-Chief: Kristin Feeney, B.S. [3]
Overview
A patent foramen ovale is a flap-like structure in inter-atrial septum that is formed by failure of postnatal fusion of septum primum and septum secundum. It periodically opens and allows blood to shunt between the two atria. Thus, it is also sometimes called as a probe patent (PFO). This flap-like structure functions like a one-way valve mechanism that only opens to allow blood to flow from the right atrium to the left atrium during times where there is an increase flow or pressure in the right atrium. Elevation of pressure in the pulmonary circulatory system (i.e. pulmonary hypertension, cough or valsalva maneuver) can cause the foramen ovale to open.
Pathophysiology
Physiology
Pathogenesis
- A foramen ovale is a remnant from the fetal circulation. It may remain parent after birth and through adulthood.[1]
Associated Conditions
Conditions associated with patent foramen ovale include:[2]
- Migraine headaches
References
- ↑ Morjaria R, Tsaloumas M, Shah P (2015). "An unusual presentation of patent foramen ovale". JRSM Open. 6 (8): 2054270415596320. doi:10.1177/2054270415596320. PMC 4562378. PMID 26380102.
- ↑ Yakhkind, A.; Castaldo, J.; Leary, M.C. (2017). "Stroke and Migraine": 570–573. doi:10.1016/B978-0-12-803058-5.00111-9.