Atrial Septal Defect (ASD) Closure

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Atrial Septal Defect (ASD)

An Atrial Septal Defect (ASD) is an opening or hole in the wall that separates the two upper chambers of the heart. 

The hole causes oxygen-rich blood to leak from the left side of the heart to the right side. This causes extra work for the right side of the heart, since more blood than necessary is flowing through the right ventricle to the lungs. Surgery or device closure may be necessary to repair atrial septal defects so as to prevent complications.

Signs & Symptoms of ASD

Many babies do not have any signs & symptoms for ASD, they are shown in adults if ASD is left untreated.

The common signs & symptoms are:

  • Frequent respiratory or lung infections
  • Difficulty in breathing
  • Shortness of breath
  • Skipped heartbeats
  • A heart murmur, it is a whooshing sound that can be heard with a stethoscope
  • Swollen legs, feet, or abdomen

Types of ASD

  • Secundum: It involves the middle of the wall between the atrial septum and is the most common type of ASD.
  • Primum: It involves the lower part of atrial septum.
  • Sinus venosus: It involves the upper part of the atrial septum and occurs very rarely.
  • Coronary sinus: It involves the wall between the coronary sinus and the left atrium

Causes & risk factors of ASD

  • Consumption of drug, tobacco or alcohol.
  • Exposure to certain substances like heavy metals and environmental toxins.
  • Rubella infection.
  • Diabetes & obesity.
  • Genetic problems like Down’s syndrome.

Diagnosis of ASD

  • Echocardiogram: This involves the usage of Sound waves to produce video images of the heart & allows the doctor to see the heart’s chambers and measure their pumping strength.
  • Chest X-ray: This helps to see the condition of the heart.
  • Electrocardiogram (ECG): It records the electrical activity of the heart.
  • Cardiac catheterization: It involves the insertion of a thin, flexible tube (catheter) into a blood vessel through groin and is pushed forward to the heart. With the help of this test the doctors can diagnose congenital heart defects, check pumping of heart and function of the heart valves.
  • Computerized tomography (CT) scan.

Medications

They are given to reduce the signs & symptoms of ASD. Medications may include to keep the heartbeat regular or to reduce the risk of blood clots.

Interventions

  • Cardiac catheterization: In this procedure, a thin tube known as catheter is inserted into a blood vessel through the groin and advanced into the heart with the help of imaging techniques. Through the catheter, doctors set a mesh patch or plug into is placed close the hole. The heart tissue grows around the mesh that seals the hole permanently.
  • Open-heart surgery: The patient is given general anaesthesia and a heart-lung machine is also required. Through an incision in the chest, patches are placed to close the hole. This procedure is the preferred for certain types of atrial septal defects.

FAQs

Can ASD close its own?

  • The child’s (patient) cardiologist will check periodically whether ASD is closing on its own or not. If an ASD is not closing then it is repaired or surgically closed.

How long does it take to recover from ASD closure surgery?

  • It takes up to 6 weeks to recover from ASD closure surgery.

Can ASD defect be cured?

  • ASD can be cured by two surgeries: Cardiac catheterization & Open-heart surgery

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