The ostium secundum atrial septal defect is the most common type of atrial septal defect and comprises 6–10% of all congenital heart diseases. It involves a patent ostium secundum (that is, a patent …

Jan 23, 2024 · Types of atrial septal defects (ASDs) include: Secundum. This is the most common type of ASD. It occurs in the middle of the wall between the upper heart chambers. This wall is called the …

Sep 30, 2024 · This perforation, the second opening in the septum primum, is called ostium secundum. As the atria expand to either side of the truncus arteriosus, a fold is produced within the atria just to...

Mar 3, 2025 · Each has a different location in the atrial septum (wall). Secundum atrial septal defects are in the middle of your atrial septum. This is the most common type of atrial septal defect (eight out of …

An ostium secundum ASD is a hole in the center of the atrial septum. Normally, the right side of the heart pumps oxygen-poor blood to the lungs, while the left side pumps oxygen-rich blood to the body.

Nov 18, 2025 · A secundum ASD will appear as a variably sized area of septal "dropout," or absence of tissue, in the mid/central interatrial septum about the fossa ovalis delimited by inferior and superior …

Sep 13, 2024 · Ostium secundum atrial septal defect (ASD) is one of the most common congenital heart defects. It involves an opening in the atrial septum, the wall that separates the heart's two upper …

Dec 15, 2023 · Ostium secundum defect is a common congenital heart condition characterized by an abnormal opening in the atrial septum. In this article, we will explore the causes, symptoms, …

These defects probably represent a stretched patent foramen ovale rather than true secundum ASDs. Ostium primum ASDs and sinus venosus ASDs do not close spontaneously.

The foramen secundum or ostium secundum is a foramen in the septum primum, a precursor to the interatrial septum of the human heart. It is not the same as the foramen ovale, which is an opening in …