Atrioventricular Canal Defect Repair in India

AV canal defect repair in India from $6,500. Complete and partial AVCD — expert paediatric cardiac surgery. Apollo, AIIMS, Medanta. 90% success rate.

Estimated cost: $6,500 – $11,000 · Average stay: 10–14 days

An atrioventricular canal defect (AVCD) — also called endocardial cushion defect or atrioventricular septal defect — is a congenital heart defect in which there is a hole in both the atrial and ventricular septa and a single common AV valve instead of the normal separate mitral and tricuspid valves. It is commonly associated with Down syndrome (trisomy 21), occurring in approximately 20% of children with Down syndrome.

In complete AVCD, both the atrial and ventricular components are present (ostium primum ASD + inlet VSD + common AV valve). In partial AVCD (ostium primum ASD), only the atrial defect and a cleft mitral valve are present without a ventricular component.

Surgical repair is the definitive treatment, performed at 3–6 months of age for complete AVCD to prevent pulmonary hypertension. India's paediatric cardiac surgery centres perform AVCD repair with outcomes comparable to Western series: mortality 2–5% for complete AVCD.

Complete vs. Partial AVCD

Complete AVCD (type C): large atrial and ventricular septal defects with a single common five-leaflet AV valve shared between both ventricles. Causes severe left-to-right shunt, heart failure in early infancy, and rapid development of pulmonary hypertension. Requires complete repair (patch closure of both defects, AV valve reconstruction) at 3–6 months.

Partial AVCD (ostium primum ASD): atrial defect only, with a cleft in the mitral valve causing mitral regurgitation. No ventricular defect. Children are less symptomatic and repair can be deferred to 2–4 years. Repair involves ASD closure with pericardial patch and mitral cleft suture.

When Should AVCD Be Repaired?

Complete AVCD is repaired at 3–6 months of age before irreversible pulmonary vascular disease develops. If pulmonary artery pressure is elevated on catheterisation (Rp >8 Wood units/m²), surgery may not be possible; pulmonary vasodilator therapy is attempted first. Partial AVCD is repaired electively at 2–5 years.

How is AVCD Repair Performed?

On cardiopulmonary bypass, the common AV valve is divided into left (mitral) and right (tricuspid) components. The VSD is closed with a Dacron or GORE-TEX patch sutured to the divided valve leaflets. The ASD is closed with a pericardial patch. The cleft in the mitral valve leaflet is sutured. The repair is tested by saline injection or TOE to confirm no significant AV valve regurgitation.

Procedure Steps

1. Pre-operative: echo, cardiac catheterisation to assess pulmonary vascular resistance.
2. Pulmonary artery banding as temporisation if surgery is delayed (rare).
3. Cardiopulmonary bypass; cardiac arrest; right atriotomy.
4. AV valve anatomy assessed; common valve divided.
5. VSD patch closure: suture to divided valve leaflets (single or two-patch technique).
6. ASD patch closure: pericardial patch to close primum defect.
7. Mitral valve cleft suture.
8. Saline test: AV valve competence assessed; repair adjusted if regurgitation present.
9. Bypass weaned; intraoperative TOE confirms repair; chest closed.

Cost Comparison Worldwide

Country — Range — Savings

--- — --- — ---

India — $6,500 – $11,000 — Save 85%

UAE — $15,000 – $28,000 — Save 65%

United States — $80,000 – $200,000 — —

United Kingdom — $30,000 – $60,000 — —

Complete AVCD repair in India costs $6,500–$11,000. Partial AVCD repair costs $5,500–$8,000. Both are 85% cheaper than equivalent procedures in the United States.

Recovery & Follow-up

Hospital stay 10–14 days. Infants with Down syndrome may have additional post-operative challenges (respiratory infections, feeding difficulties) requiring longer stays. Mitral valve competence is assessed before discharge by echocardiography. Long-term follow-up for mitral regurgitation progression and AV block is essential.

Recovery Tips

• Chest physiotherapy reduces respiratory complications, especially in children with Down syndrome.
• Anti-congestive medications (diuretics, ACE inhibitors) are continued for 3–6 months post-repair.
• Regular echocardiography to monitor mitral valve function.
• Children with Down syndrome benefit from early developmental intervention alongside cardiac rehabilitation.
• Report any new breathlessness, oedema, or feeding difficulty promptly.

Risks & Complications

Mortality 2–5% for complete AVCD at experienced centres. Complications: complete heart block (AV block — risk is highest near the AV node, which sits close to the VSD) requiring permanent pacemaker (3–5%), residual VSD, residual mitral regurgitation requiring re-operation (10–15% over 10 years), and subaortic stenosis.

Why GAF Healthcare

Gaf Healthcare works with paediatric cardiac surgeons in India experienced in AVCD repair in children with and without Down syndrome. We coordinate the complete evaluation (including pre-operative catheterisation), surgery, and ICU stay, with dedicated coordination for Down syndrome families who have additional support needs.

Frequently Asked Questions

Is AVCD more common in Down syndrome?

Yes. Approximately 40–50% of children with Down syndrome have congenital heart disease; of these, AVCD is the most common defect (occurring in about 40–50% of those with CHD). All children with Down syndrome should have a cardiological assessment in the newborn period.

Will the mitral valve need to be replaced?

Mitral valve reconstruction (not replacement) is the standard approach. Re-operation for significant mitral regurgitation is needed in 10–20% of patients over 10–20 years. Valve repair is again attempted before replacement.

What is the risk of heart block after AVCD repair?

Complete AV block requiring pacemaker occurs in 3–5% of AVCD repairs. The AV node and His bundle run close to the VSD patch suture line — experienced surgeons use techniques to minimise this risk.

Can AVCD repair be deferred?

Partial AVCD can safely be deferred to 2–5 years. Complete AVCD must be repaired by 6 months because irreversible pulmonary hypertension develops rapidly with the combined atrial and ventricular shunt. Pulmonary artery banding is occasionally used to temporise if surgery must be delayed.

Will my child need surgery again?

Approximately 10–15% of AVCD patients require re-operation over 10–20 years, most commonly for progressive mitral regurgitation. Regular echocardiographic follow-up detects this early.