Atrial Septostomy

If a baby is born with a heart defect, they may need an atrial septostomy. The primary goal of an atrial septostomy is to improve blood flow or relieve pressure in one side of the heart.

Atrial septostomy is a procedure that creates a small hole between the two upper chambers of the heart (the atria). This hole helps to balance blood pressure in the heart or improve how much oxygen gets into the blood. It's often done quickly after birth in urgent situations. It's important to remember that this procedure doesn't fix the underlying problem, but it does help manage the symptoms.

The procedure is most commonly performed in infants with specific types of severe congenital heart disease where blood flow or pressure dynamics are critically imbalanced:

  • Transposition of the great arteries (TGA): This is the most common indication. In TGA, the aorta and pulmonary artery are switched, meaning oxygen-rich blood cycles through the lungs and back to the lungs, while oxygen-poor blood cycles through the body and back to the body. If there isn't a good mixing of blood between the atria (usually through a PFO or small ASD), the body receives very little oxygen. An atrial septostomy creates a larger opening, allowing oxygenated and deoxygenated blood to mix, thus improving oxygen delivery to the body until corrective surgery can be done.
  • Hypoplastic left heart syndrome (HLHS): In this condition, the left side of the heart is severely underdeveloped. The right side of the heart has to pump blood to both the lungs and the body. If the opening between the atria is too small or closed, pressure can build up in the left atrium, impeding blood flow from the lungs and causing pulmonary congestion. An atrial septostomy relieves this pressure, allowing blood to flow more freely.
  • Critical pulmonary stenosis or atresia with intact atrial septum: When there's a severe obstruction to blood flow from the right ventricle to the lungs, pressure builds in the right atrium. If the atrial septum is intact or nearly so, it prevents blood from escaping to the left side and reaching the body. Creating a septal opening allows deoxygenated blood to reach the left atrium and mix with oxygenated blood, improving systemic blood flow.
  • Critical mitral stenosis or atresia with intact atrial septum: Similar to the above, but on the left side. If there's a severe obstruction to blood flow from the left atrium to the left ventricle, pressure builds in the left atrium. An atrial septostomy allows blood to escape to the right side, relieving pressure and preventing pulmonary edema.

Why choose AHN

If your child needs an atrial septostomy, you want care from a team dedicated to excellent care, compassion, and a multidisciplinary approach. That’s what you’ll experience at AHN. Our specialists have extensive experience in congenital heart defects and successful procedure outcomes. You’ll be met with providers who communicate complex medical information clearly and empathetically, while actively listening to any concerns you may have to foster a trusting, transparent relationship that you can depend upon.

What to expect for an atrial septostomy

An atrial septostomy, a vital heart procedure primarily for infants with specific congenital heart defects, is performed exclusively in a hospital's cardiac catheterization lab.

Preparation involves thorough medical evaluations and discussions with specialists to understand the procedure and anesthesia. During the procedure, the patient receives general anesthesia, and a thin catheter is guided through a vein (usually in the groin) to the heart. A balloon on the catheter is then inflated to create or enlarge an opening between the heart's upper chambers, improving blood mixing. The actual procedure typically takes 30 minutes to an hour, followed by monitoring in a recovery unit and a hospital stay ranging from a few days to longer, depending on the patient's condition.

Atrial septostomy recovery

Recovery will depend on the individual and can vary based on their personal health. After the procedure, the patient will be moved to a recovery area or an intensive care unit (ICU) for close monitoring. In recovery heart rate, breathing, blood pressure, and oxygen levels will be continuously monitored. The insertion site will also be checked for bleeding. The patient will need to lie still for several hours to allow the insertion site to heal and prevent bleeding.

Once the patient is more stable, feeding will be gradually reintroduced. The length of stay in the hospital can vary. For a straightforward procedure, it might be a few days, but it could be longer if the patient is very ill or requires additional monitoring and support.

Regular follow-up appointments with the cardiologist will be necessary to monitor the heart's function and the effects of the septostomy.

Atrial septostomy FAQs

Questions about atrial septostomy are normal and expected. Navigating a heart condition can be an overwhelming experience, and AHN is here to help. These frequently asked questions can provide a good starting point to conversations with your care team and may help provide some much-needed information as you determine your care options.

How does an atrial septostomy work?

An atrial septostomy works by creating or enlarging an opening between the two upper chambers of the heart, the atria. This is typically done using a cardiac catheter, a thin tube inserted into a blood vessel (usually in the groin) and guided to the heart. Once in place, a balloon at the tip of the catheter is inflated across the atrial septum (the wall separating the atria), tearing or stretching it to allow more blood to mix between the left and right sides of the heart, improving oxygen saturation.

What is the purpose of atrial septostomy?

The primary purpose of an atrial septostomy is to improve blood mixing between the systemic and pulmonary circulations in infants and children with certain complex congenital heart defects, most notably D-transposition of the great arteries (d-TGA). In these conditions, the heart's natural pathways prevent proper oxygenation of the blood, and creating a larger atrial opening allows oxygen-rich and oxygen-poor blood to mix, ensuring more oxygenated blood reaches the body's organs and tissues, which is crucial for survival until definitive repair surgery can be performed.

What is another name for a balloon atrial septostomy?

Another common name for a balloon atrial septostomy is Rashkind procedure or Rashkind balloon septostomy, named after Dr. William Rashkind, who developed the technique.

Why do you need an atrial septostomy?

An atrial septostomy is needed when there is insufficient mixing of oxygenated and deoxygenated blood in the heart due to a congenital heart defect, leading to dangerously low oxygen levels in the body. For example, in transposition of the great arteries, the two main arteries leaving the heart are switched, so the body doesn't receive enough oxygen. Creating or enlarging the opening between the atria allows more blood to mix, temporarily improving oxygen delivery to the body and stabilizing the patient until more definitive corrective surgery can be safely performed.

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Call (412) DOCTORS 412-362-8677 or request an appointment with AHN cardiovascular services.

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