2.3: Epidemiology
There are three important types of atrial septal defect (ASD) which includes 10% of entire congenital heart diseases(CHD) and as much as 20-40% of CHD’s occurring in adulthood. The most common types of ASD are as follow:
Ostium secundum: One of the remarkable type of ASD which sums up75% of all ASD cases, symbolizing almost 7% of all the congenital heart defects and 30-40% of all CHD’s in patients with the ages above 40 years52-53.
Ostium primum: The second most common type of ASD comprises of 15-20% of all ASDs. It is a form of atrioventricular septal disorder and is generally linked with mitral valve abnormalities52-54.
Sinus venosus: The least common type of the three, sinus venosus (SV) ASD is diagnosed in 5-10% of all
There are three important types of atrial septal defect (ASD) which includes 10% of entire congenital heart diseases(CHD) and as much as 20-40% of CHD’s occurring in adulthood. The most common types of ASD are as follow:
Ostium secundum: One of the remarkable type of ASD which sums up75% of all ASD cases, symbolizing almost 7% of all the congenital heart defects and 30-40% of all CHD’s in patients with the ages above 40 years52-53.
Ostium primum: The second most common type of ASD comprises of 15-20% of all ASDs. It is a form of atrioventricular septal disorder and is generally linked with mitral valve abnormalities52-54.
Sinus venosus: The least common type of the three, sinus venosus (SV) ASD is diagnosed in 5-10% of all