patent foramen ovale
MONDO:0020439Mondo
Findings
No curated finding names patent foramen ovale yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
A persistent opening in the atrial septum after birth. While a normal part of fetal circulation, the foramen ovale should close once the newborn begins breathing and the pressure in the left atrium exceeds that of the right atrium. While a PFO is generally asymptomatic, it can lead to the passage of clots from the venous circulation into the artierial circulation, resulting in paradoxical emboli, and possible strokes.
Definition from the Mondo Disease Ontology (MONDO:0020439), read 2026-09-29. CC BY 4.0.
Where it sits
- A kind of
Other names
2 names
Resolves to: patent foramen ovale
- Also called
- ostium secundum type atrial septal defectpatent foramen ovale (disease)