ASD (Atrial Septal Defect) Closure

An Atrial Septal Defect (ASD) is a congenital heart defect where there is a hole in the wall (septum) between the two upper chambers (atria) of the heart. This hole allows blood to flow from the left atrium to the right atrium, which can lead to an increase in blood flow to the right side of the heart and lungs. In most cases, ASD is present at birth and can be diagnosed through imaging tests like echocardiograms or heart MRI scans.

ASD is typically a congenital condition, meaning it is present at birth. The exact cause is not always clear, but several factors may contribute to the development of ASD:

Genetic Factors: In many cases, ASD may run in families, suggesting a genetic predisposition. Certain genetic syndromes, such as Down syndrome, can increase the likelihood of developing ASD.

Environmental Factors: While not as common, certain maternal conditions during pregnancy, such as viral infections (rubella), or exposure to drugs or alcohol, can contribute to the development of ASD in the fetus.

Premature Birth: Children born prematurely may have an increased risk of developing ASD.

Other Heart Defects: ASD can be associated with other congenital heart defects, such as ventricular septal defects (VSD) or patent ductus arteriosus (PDA).

In some cases, the exact cause of the defect is unknown, and ASD develops without any apparent reason.

The symptoms of ASD can vary depending on the size of the hole in the heart and the amount of blood shunted to the right side of the heart. In many cases, small ASDs do not cause noticeable symptoms and may be discovered incidentally during routine health exams. However, larger ASDs or those left untreated can lead to the following symptoms: