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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. Ostium primum atrial septal defect - Wikipedia

    en.wikipedia.org/wiki/Ostium_primum_atrial...

    The ostium primum atrial septal defect is a defect in the atrial septum at the level of the tricuspid and mitral valves. This is sometimes known as an endocardial cushion defect because it often involves the endocardial cushion, which is the portion of the heart where the atrial septum meets the ventricular septum and the mitral valve meets the tricuspid valve.

  4. Wikipedia : Osmosis/Atrial septal defect

    en.wikipedia.org/.../Atrial_septal_defect

    An atrial septal defect is a congenital heart defect where the septum between the right and left atrium doesn’t close up all the way and remains open after birth. This causes oxygenated blood to go into pulmonary circulation.

  5. Heart septal defect - Wikipedia

    en.wikipedia.org/wiki/Heart_septal_defect

    Heart septal defect refers to a congenital heart defect [1] of one of the septa of the heart. Atrial septal defect; Atrioventricular septal defect; Ventricular septal defect; Although aortopulmonary septal defects are defects of the aorticopulmonary septum, which is not technically part of the heart, they are sometimes grouped with the heart ...

  6. Heart valve - Wikipedia

    en.wikipedia.org/wiki/Heart_valve

    A heart valve is a biological one-way valve that allows blood to flow in one direction through the chambers of the heart. A mammalian heart usually has four valves. Together, the valves determine the direction of blood flow through the heart. Heart valves are opened or closed by a difference in blood pressure on each side. [1] [2] [3]

  7. Trilogy of Fallot - Wikipedia

    en.wikipedia.org/wiki/Trilogy_of_Fallot

    Pulmonary valve defects resulting in tricuspid regurgitation, a common effect of pulmonary stenosis, can cause this increase in muscle mass. [5] Atrial septal defect An atrial septal defect is a hole in the septum that divides the right and left atria (the upper two chambers) of the heart. In the heart of a developing fetus, there are several ...

  8. Congenital heart defect - Wikipedia

    en.wikipedia.org/wiki/Congenital_heart_defect

    Congenital heart defects are divided into two main groups: cyanotic heart defects and non-cyanotic heart defects, depending on whether the child has the potential to turn bluish in color. [3] The defects may involve the interior walls of the heart, the heart valves, or the large blood vessels that lead to and from the heart. [7]

  9. 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.

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