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Atrial Septal Defect

Atrial Septal Defect: Symptoms, Causes and Risk Factors, Diagnosis, Treatments  | National Heart Centre Singapore

Atrial Septal Defect - What it is

Atrial septal defect (ASD) is a defect between the two upper heart chambers (the atria). This defect allows mixing of oxygenated and deoxygenated blood, eventually causing right heart enlargement and high pressure in the lungs (pulmonary hypertension).

Moderate- to large-sized ASD causing right heart dilatation and raised pressure in the lungs should be closed. Closure can be performed either via percutaneous method using devices (through the femoral vein) or through open-heart surgery.

Small ASD with no chamber enlargement, raised lung pressure or other complications needs only to be followed up at the clinic.

atrial septal defect illustration

Percutaneous Closure of Atrial Septal Defect (ASD)

This procedure is performed to close the ASD by inserting a device through the blood vessels in the groin (percutaneous transcatheter approach) which will close the ASD.

Atrial Septal Defect - How to prevent?

Atrial Septal Defect - Preparing for surgery

Atrial Septal Defect - Post-surgery care

The information provided is not intended as medical advice. Terms of use. Information provided by SingHealth

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