What are the symptoms of patent foramen ovale

Update Date: 2023-05-07 Source: Network

summary

The foramen ovale is usually closed in the first year after birth. If the foramen ovale is still not closed in children over 3 years old, it is called patent foramen ovale. In adults, 20% - 25% of the foramen ovale are not completely closed.

What are the symptoms of patent foramen ovale

First, patent foramen ovale is basically asymptomatic. The patent foramen ovale in infancy can not be treated, but if the defect is large, it is best to treat.

The second is the formation of foramen ovale. At the 6th and 7th week of embryonic development, the atrial septum successively sends out two septa. The first septum is the primary septum or the first septum, and the second septum is the secondary septum or the second septum. The primary septum grows from the dorsal wall of the atrial midline in a half moon shape, grows to the atrioventricular canal, fuses with the endocardial cushion, and leaves a small hole with the end of the atrioventricular septum, which is called the primary foramen.

Third: before the primary foramen is not closed, the proximal part of the primary septum forms a foramen, called secondary foramen, which is the normal passage of fetal blood. At the same time, on the right side of the first septum, a sickle shaped septum grows from the atrial wall, which is called the secondary septum or the second septum. This septum does not continue to grow. The separated atrium stops midway. The sickle shaped depression is oval, which is called the oval fossa. At the oval fossa, the primary septum and the secondary septum fail to adhere and fuse, leaving a small gap, which is called the foramen ovale. When the newborn was born, with the first cry, the left atrial pressure increased, making the left primary septum cling to the right secondary septum, resulting in functional closure, and reaching anatomical closure within one year. If the foramen ovale of children over 3 years old is still not closed, it is called patent foramen ovale.

matters needing attention

Patent foramen ovale is asymptomatic, difficult to hear murmur, ECG, chest X-ray are normal. Therefore, it is not easy to find and is not valued by people.