Cardiology · Structural Heart
ASD Device Closure
Sealing a hole in the heart through a vein
Medically reviewed by Dr Kunal Ajay Patankar, DrNB (Cardiology)
What it is
An Atrial Septal Defect (ASD) is a hole between the heart's upper chambers, present from birth. Over years, the extra blood flow enlarges the right heart and can cause breathlessness, rhythm problems and, eventually, irreversible lung pressure changes.
Device closure seals the hole with a soft, self-expanding double-disc occluder delivered through a leg vein — a permanent repair with no chest scar, usually completed within an hour.
Who needs it
- ASD with right heart enlargement on echocardiography
- Breathlessness, palpitations or reduced stamina from the defect
- Suitable rims around the defect on imaging (assessed by TEE)
- Children, adults and even older patients — age is rarely a barrier
How it happens, step by step
1
Sizing
Transoesophageal echo measures the defect and its rims precisely, selecting the right device size.
2
Delivery
Under echo and X-ray guidance, the folded device travels through a leg vein into the heart.
3
Deployment
One disc opens on the left side, one on the right — the septum is sandwiched and the hole sealed instantly.
4
Stability check
Gentle testing confirms the device is anchored before release. Heart tissue grows over it within months.
Recovery, honestly
- Home within 24–48 hours
- Back to school or work within days
- Aspirin (and sometimes clopidogrel) for a few months while tissue covers the device
- Echo follow-up at intervals; most patients need no further treatment ever
Common questions
Will the device be rejected?
No. The occluder is made of biocompatible nitinol mesh used worldwide for decades; your own tissue covers it completely.
Can every ASD be closed with a device?
Most secundum ASDs with adequate rims can. Very large defects or deficient rims may still need surgical closure — imaging tells us beforehand.
My child has an ASD — when should it be closed?
Timing depends on size and heart enlargement. Many are closed electively before school age; a detailed echo review will define the right window.
Wondering if ASD Device Closure is right for you?
Every heart is different. Bring your reports and questions — we'll map your options together.