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  2. Atrial septal defect - Wikipedia

    en.wikipedia.org/wiki/Atrial_septal_defect

    Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart.Some flow is a normal condition both pre-birth and immediately post-birth via the foramen ovale; however, when this does not naturally close after birth it is referred to as a patent (open) foramen ovale (PFO).

  3. Interatrial septum - Wikipedia

    en.wikipedia.org/wiki/Interatrial_septum

    An Atrial septal defect is a relatively common heart malformation that occurs when the interatrial septum fails to develop properly. Persistence of the ostium secundum is the most common atrial septal defect. [3] Additionally, in a subset of the population, the foramen ovale is not overtly patent but the two septa have not fused.

  4. Primary interatrial foramen - Wikipedia

    en.wikipedia.org/wiki/Primary_interatrial_foramen

    The septum primum, a septum which grows down to separate the primitive atrium into the left atrium and right atrium, grows in size over the course of heart development.The primary interatrial foramen is the gap between the septum primum and the septum intermedium, which gets progressively smaller until it closes.

  5. Congenital heart defect - Wikipedia

    en.wikipedia.org/wiki/Congenital_heart_defect

    Defects in the interatrial septum or the interventricular septum allow blood to flow from the left side of the heart to the right, reducing the heart's efficiency. [47] Ventricular septal defects are collectively the most common type of CHD, [48] although approximately 30% of adults have a type of atrial septal defect called probe patent ...

  6. Foramen secundum - Wikipedia

    en.wikipedia.org/wiki/Foramen_secundum

    For the septum primum, the problem can arise as a result of excess resorption of the septum during the process of apoptosis in order to form the foramen secundum. For the septum secundum, its inadequate growth can cause atrial septal defect since it is supposed to grow and eventually overlap the foramen secundum so as to form the oval foramen.

  7. Fossa ovalis (heart) - Wikipedia

    en.wikipedia.org/wiki/Fossa_ovalis_(heart)

    The fossa ovalis is a depression in the right atrium of the heart, at the level of the interatrial septum, the wall between right and left atrium.The fossa ovalis is the remnant of a thin fibrous sheet that covered the foramen ovale during fetal development.

  8. Atrioventricular canal - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_canal

    The interatrial septum divides the left and right atrium; The interventricular septum divides the left and right ventricles. The mitral valve and tricuspid valve are formed by the proper division of an early common valve being separated into two. [5] Atrioventricular canal defect may be divided into partial or complete forms. In the partial ...

  9. Lutembacher's syndrome - Wikipedia

    en.wikipedia.org/wiki/Lutembacher's_syndrome

    Septal defects that may occur with Lutembacher's syndrome include: Ostium primum atrial septal defect or ostium secundum which is more prevalent. [1] Lutembacher's syndrome affects females more often than males. [1] It can affect children or adults; the person can either be born with the disorder or develop it later in life.

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