14734 Interrupted Aortic Arch

Overview

Interrupted aortic arch is a rare heart condition a baby is born with. The aorta, which is the body’s main artery, has a gap or a missing part. This gap stops blood from flowing properly from the heart to the rest of the body. It is a serious problem that needs quick medical care and usually surgery.

No. Interrupted aortic arch is very rare. It affects only about 2 to 3 babies in every 100,000 births.

It affects newborn babies. It can happen in any baby, but it is slightly more common in boys. Many babies with this condition also have other heart problems.

Symptoms

Common symptoms

• Poor feeding or trouble sucking
• Rapid breathing or breathing harder than normal
• Weak pulses in the legs or feet
• Gray or pale skin color
• Cold hands and feet
• Lethargy or sleepiness

Symptoms in children

• In babies, symptoms usually start within the first few days after birth.
• Your baby may sweat while feeding or breathe very fast.
• The skin may look blue or gray, especially around the lips.
• Your baby may seem weak, floppy, or unusually tired.

Symptoms in older adults

• Interrupted aortic arch is usually diagnosed in newborns, so older adults rarely have this condition without treatment.
• Adults who had surgery for it as infants may have long-term issues like high blood pressure or heart valve problems, and they need regular checkups.

Causes

Main causes

• The exact cause is unknown, but it happens when the aorta does not form completely while the baby is growing in the womb.
• Many babies with interrupted aortic arch also have a gene change (deletion) on chromosome 22, called DiGeorge syndrome.
• It is often associated with other heart defects, like a ventricular septal defect (a hole between the lower chambers of the heart).

Risk factors

• A family history of congenital heart defects
• A mother with certain health conditions during pregnancy, such as poorly controlled diabetes
• A genetic condition like DiGeorge syndrome

When to see a doctor

See a doctor urgently if:

• If your baby has blue or gray skin, very fast breathing, or seems extremely weak, call your local emergency number right away.
• If your baby is not feeding or is breathing hard, go to the emergency department immediately.

Book a routine appointment if:

• If you are pregnant and an ultrasound shows a possible heart problem, your healthcare provider will arrange follow-up tests and specialists.
• If your child has had surgery for interrupted aortic arch, keep all follow-up appointments with the heart specialist (cardiologist).

Diagnosis

Some cases of interrupted aortic arch are found during pregnancy on an ultrasound. More often, babies are diagnosed soon after birth because they show signs of low blood flow, like a weak pulse or poor feeding. A doctor will listen to the heart, feel the pulses, and order imaging tests.

Tests that may be done

• Echocardiogram (an ultrasound of the heart) – this is the main test to see the defect.
• Pulse oximetry – a small sensor on the skin checks oxygen levels in the blood.
• Chest X-ray – may show signs of heart failure or lung problems.
• Cardiac catheterization – a thin tube is used to examine the heart and blood vessels in more detail, sometimes before surgery.
• Genetic testing – looks for chromosome changes, like DiGeorge syndrome.

What to expect at your appointment

If the doctor suspects interrupted aortic arch, your baby will be admitted to a neonatal intensive care unit (NICU) or children’s heart center. The care team will explain all the tests, and the diagnosis process is calm and supportive.

Treatment

Treatment begins by stabilizing the baby. This may include giving fluids, helping with breathing, and using medicines to help the heart work until surgery can be done. Surgery is needed to fix the gap and is usually performed in the first days of life.

Self-care at home

• Follow every instruction from your child’s heart care team.
• Learn the signs of breathing trouble or poor circulation, and know when to seek emergency help.
• Keep all appointments for monitoring, imaging, and blood pressure checks.
• Ask for support from family, friends, or patient organizations to help you cope.

Medical treatments

Doctors may use medicines to help the heart muscle pump better, to lower blood pressure, or to prevent extra strain on the heart. These medicines are given by a specialist team and are adjusted to each child’s needs.

When is surgery considered?

Surgery is always needed for interrupted aortic arch. The surgeon will reconnect the two ends of the aorta so that blood can flow freely. Sometimes other heart defects are repaired at the same time. The operation is complex but usually successful, and most infants do well after recovery.

Living with this condition

After surgery, most children feel better and grow well. They need regular checkups with a pediatric cardiologist to monitor heart health, blood pressure, and any possible narrowing of the repaired aorta. Some children may need extra medicine or another procedure later in life.

Lifestyle tips

• Your child can usually play and be active, but check with the heart team for any activity limits.
• Let coaches and teachers know about your child’s heart condition.
• Keep a written summary of your child’s heart history for appointments and emergencies.

Diet and exercise

Most children can eat and exercise normally after recovery. Babies may need extra nutrition or special feeding techniques if they struggle to gain weight. As your child grows, a balanced diet and physical activity are encouraged, but always follow the cardiologist’s advice.

Mental health and emotional wellbeing

Having a child with a serious heart condition is stressful for parents and can affect the whole family. It is normal to feel anxious, scared, or overwhelmed. Parents may also need emotional support. Children who grow up with heart conditions may have concerns about physical activity or body image. Talking to a counselor or support group can help.

Prevention

Interrupted aortic arch cannot be prevented because it develops very early in pregnancy. However, good prenatal care helps spot problems early. If you have a family history or a genetic condition, talking to a genetic counselor before pregnancy can help you understand the risks.

Vaccines

Vaccinations are important for children with heart conditions. Follow the regular vaccination schedule recommended by your healthcare provider, and talk to your child’s heart specialist if you have questions about flu or other vaccines.

Screening programmes

A prenatal ultrasound can sometimes detect heart defects. After birth, pulse oximetry screening is done in many hospitals to check oxygen levels, which can help identify serious heart problems before symptoms become severe.

Complications

If left untreated

• Parts of the body may not get enough oxygen-rich blood.
• The heart may fail from pumping too hard against the blocked aorta.
• A dangerous state called shock can occur quickly.
• Without treatment, this condition is life-threatening in the first days of life.

Long-term outlook

With early diagnosis and surgery, the outlook is very good. Most babies survive and go on to live active lives. However, they need lifelong follow-up with a heart specialist, and some may need more procedures later. The medical team will be with you every step of the way.

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