Does your little baby sometimes seem to have trouble breathing? Do they choke when drinking milk or eating food? Or do you hear a strange noise when they breathe? While these issues can happen due to common infant illnesses, sometimes they point to a rarer, more serious, yet entirely treatable condition called a double aortic arch. Let us talk in detail about this condition and what it means for your child.
Simply put, the main blood vessel that carries blood from your baby's heart to the rest of the body is called the aorta. Normally, this blood vessel forms a single, large tube with a curved top section known as the aortic arch. However, when a baby has a double aortic arch, this arch forms in two separate parts instead of one.
Extra blood vessel pathways form around the main arch and create a second loop. These two arches wrap completely around your baby's windpipe (trachea) and food pipe (esophagus). If this vascular ring squeezes too tightly, your baby can experience breathing difficulties, noisy breathing, and trouble swallowing.
Key Takeaways: Double Aortic Arch.
- A double aortic arch is a congenital heart defect where two arch branches wrap around the windpipe and food pipe.
- It belongs to a group of conditions called vascular rings that squeeze the airway and digestive tract.
- Common signs include noisy breathing, stridor, a seal-like barking cough, and trouble feeding or swallowing.
- Doctors use imaging tests like CT scans, MRIs, and echocardiograms to confirm the diagnosis.
- Surgical treatment is extremely safe and successful, allowing children to live normal, healthy lives.
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What Are Vascular Rings?
As mentioned, vascular rings are abnormal formations of the aortic arch that can squeeze your baby's windpipe, food pipe, or both. These are very rare congenital heart defects. While about one in 100 babies is born with some form of congenital heart issue, a true vascular ring occurs in only about one out of every 10,000 babies.
Main Types of Vascular Rings.
Doctors classify vascular rings into several distinct categories based on how the blood vessels develop:
- Double Aortic Arch: Both left and right aortic arches wrap around the windpipe and food pipe.
- Right Aortic Arch with Aberrant Left Subclavian Artery: A single arch sits on the right side of the windpipe, with the left arm's blood vessel passing behind the airway.
- Left Aortic Arch with Aberrant Right Subclavian Artery: A standard left arch exists, but the right subclavian artery loops behind the esophagus.
- Innominate Artery Compression: The main head-and-neck artery presses against the front of the windpipe.
- Pulmonary Artery Sling: The left pulmonary artery branches abnormally and runs directly between the trachea and esophagus.
Are There Different Types of Double Aortic Arch?
Yes, medical experts divide double aortic arches into three main categories depending on which arch is larger and where it is located:
- Dominant Right Arch with a Small Left Arch: This is the most common type, accounting for about 80 percent of cases.
- Dominant Left Arch with a Small Right Arch: This occurs in about 10 percent of cases.
- Balanced Arches: Both arches are equal in size, representing about 10 percent of cases.
Which Vascular Ring is Most Common?
Medical professionals once thought the double aortic arch was the most common vascular ring. Newer studies show that a right aortic arch is actually more frequent overall.
However, babies with a right aortic arch often have other hidden heart defects. Because they may show fewer symptoms early on, doctors sometimes diagnose them later when the child is between six and eighteen months old. In contrast, a double aortic arch tends to show symptoms much earlier in infancy, leading to a quicker diagnosis and prompt surgical care.
Symptoms of a Double Aortic Arch.
Symptoms appear because the extra blood vessel ring places physical pressure on your baby's breathing tube, food tube, or both. Most symptoms show up during early infancy, though some children do not show signs until toddlerhood.
Some children are mistakenly treated for asthma because their breathing sounds are similar. Only when asthma treatments fail do doctors run further tests to discover the underlying vascular ring.
Respiratory Symptoms.
Roughly 91 percent of infants and children with a double aortic arch experience respiratory signs, including:
- Noisy breathing, such as a high-pitched squeak ( stridor ) or a whistling sound ( wheezing ).
- A barking cough that sounds like a seal, very similar to croup .
- Frequent lower respiratory tract infections.
digestive Symptoms.
About 40 percent of affected children experience digestive difficulties, such as:
- Choking or gagging while drinking milk or eating solid food.
- Trouble swallowing ( dysphagia ), which often becomes more noticeable when starting solid foods.
- Poor weight gain or slow growth.
- Frequent spitting up or reflux.
Heart Symptoms.
Roughly 30 percent of children experience cardiovascular signs:
- Chest discomfort or pain.
- An unusual heart sound ( heart murmur ).
- A bluish tint to the skin ( cyanosis ) due to low oxygen levels.
What Causes a Double Aortic Arch?
Doctors do not yet know the exact cause of a double aortic arch. While babies conceived through in-vitro fertilization (IVF) sometimes show a slightly higher rate, the direct reason remains unclear.
This condition can sometimes link with other medical issues. About 12 percent of babies with a double aortic arch have another heart defect, such as a ventricular septal defect or tetralogy of Fallot. also, about 20 percent may have genetic variations like chromosome 22q11 deletion or Down syndrome.
How Do Doctors Diagnose a Double Aortic Arch?
Doctors usually discover this condition either by chance during routine prenatal scans or when infants start showing breathing and feeding symptoms. Since 2004, prenatal ultrasound scans have gotten much better at spotting vascular rings before birth.
Diagnostic Tests.
To confirm the diagnosis after birth, doctors rely on several imaging tests:
- Chest X-ray: Often the first simple imaging study ordered.
- CT Scan: Provides detailed 3D pictures of the blood vessels and airways.
- Echocardiogram: Uses sound waves to check for any other heart defects.
- MRI Scan: Offers clear soft-tissue and vascular details without radiation.
In some cases, doctors perform a bronchoscopy to look directly inside the windpipe with a tiny camera.
How is a Double Aortic Arch Treated?
Treating a double aortic arch requires surgery . For babies without severe symptoms, surgeons often schedule the procedure between 6 and 9 months of age. Babies with severe breathing or feeding problems need surgery much sooner.
Surgeons first performed this operation successfully in 1947. Today, surgical techniques have advanced tremendously, allowing affected children to enjoy long, healthy lives.
The Surgical Procedure.
The surgery is very safe and boasts excellent success rates. Most babies do not even need a heart-lung bypass machine during the procedure.
Surgeons typically perform a lateral thoracotomy , making a small incision between the ribs on the left side of the chest. They tie off and divide the smaller, non-dominant arch vessel to relieve all pressure on the windpipe and food pipe.
Your baby will usually stay in the hospital for about a week to recover before heading home.
Treating a Kommerell Diverticulum.
Rarely, children with a double aortic arch also have a Kommerell diverticulum (KD) . This is a small outpouching or aneurysm on the aorta near the arch. Surgeons prefer to correct or remove this pouch during the main surgery to prevent future airway compression.
Are There Risks or Complications?
Complications from a double aortic arch repair are very rare. Some children may experience mild feeding difficulties or temporary noisy breathing right after surgery. Any lingering airway sounds usually fade within a year as the windpipe continues to grow and strengthen.
Can You Prevent a Double Aortic Arch?
No, a double aortic arch cannot be prevented . It is a congenital structural issue that develops during the very early weeks of pregnancy.
What is the Long-Term Outlook?
Children who undergo surgery for a double aortic arch have a wonderful long-term outlook . They can grow up to live active, normal lives without activity restrictions.
Some children may continue to have mild noisy breathing for up to a year following surgery. This happens because the windpipe spent time compressed before the repair and simply needs time to remodel and mature.
When Should You Call Your Doctor?
Call your pediatrician right away if you notice new symptoms or if existing breathing sounds and feeding issues seem to worsen. Watch closely for a barking seal-like cough, persistent wheezing, or trouble gaining weight.
🚨 When to Call 911 or Seek Emergency Care.
A double aortic arch can sometimes cause severe, life-threatening airway narrowing. If your baby's skin, lips, or nail beds turn blue (
Questions to Ask Your Pediatrician.
If your child receives a diagnosis of a double aortic arch, consider asking your care team these important questions:
- When is the best time to schedule my baby's surgery?
- Where will the surgery take place, and who is the lead surgeon?
- What specific warning signs should I watch for while caring for my baby at home?
- Are there any feeding positions or techniques that will make eating easier for my baby?
- Did screening show any other associated heart defects?
- Should our family consider genetic testing?
- What will my child's activity levels look like after full recovery?
| Condition Feature. | Double Aortic Arch. / Aortic Arch Syndrome (Takayasu Arteritis). |
|---|---|
| Onset. | Double Aortic Arch.: Congenital (present from birth). Aortic Arch Syndrome (Takayasu Arteritis).: Acquired inflammatory disease in youth/young adults. |
| Underlying Cause. | Double Aortic Arch.: Extra embryonic blood vessel persistence. Aortic Arch Syndrome (Takayasu Arteritis).: Autoimmune blood vessel wall inflammation (Vasculitis). |
| Primary Treatment. | Double Aortic Arch.: Surgical division of the vascular ring. Aortic Arch Syndrome (Takayasu Arteritis).: Anti-inflammatory medicine and immunosuppressive therapy. |
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