Atrial septal defect is an abnormal hole in the fibrous membrane separating the two smaller, collecting chambers of the heart (atria). There are no clear reasons for the development of septal defects.

An atrial septal defect is an opening or hole in the wall that sits between the heart’s two upper chambers. The heart’s upper chambers are called the right and left atria. Some people refer to atrial ...

Atrial septal defect closure techniques have evolved considerably over recent decades. Traditional surgical repair, once the mainstay of treatment for congenital heart anomalies, has gradually been ...

† Primum (2 patients), secundum (68 patients) and sinus defects (4 patients). § Surgical branch of the study. TEE = Transesophageal echocardiography. *Children and adults. † Percutaneous branch of the ...

An ostium primum atrial septal defect (ASD) occurs when then atrial septum near the atrioventricular valves has a communication between the two atrium causing a left to right shunt. This rarely ...

An atrial septal defect of the secundum type is relatively common and occurs from failure of the septum secundum to develop. This results in a communication between the left and right atrium directly ...

The most commonly seen defects at birth are congenital heart defects (CHD). These anomalies arise when there is a failure of the heart or its major blood vessels to form properly during embryonic ...

DEFECTS of the interauricular septum in the human being carry a variable prognosis. Small openings are known to be tolerated rather well through a long span of life. Large defects give left-to-right ...

Congenital heart defects change the normal flow of blood through the heart. This is because some part of the heart didn't develop properly before birth. There are many types of congenital heart ...