Does your little one sometimes feel like he's having a hard time breathing? Or does he always choke while feeding or nursing? Or does he vomit after eating? One of the reasons for this could be a condition called `(Vascular Ring)`, which we're going to talk about today. The name may sound like a big deal, but don't be afraid . Let's talk about this simply, in a way that you can understand.
What is this `(Vascular Ring)`? Simply put...
Simply put, a Vascular Ring is a malformed structure in the aorta of a baby. Now you may be wondering what the aorta is. It is the main, largest blood vessel that carries oxygenated blood from our heart to the rest of our body. It is like the main pipe that carries water from a water tank to all parts of the house.
In this ``Vascular Ring'' condition, the aorta or its branches, the baby's trachea (the breathing tube) , the esophagus ( the food tube), or both, are compressed and wrapped around it. Think of it like something else wrapping itself tightly around a water pipe, making it difficult for water to flow.
So, what happens when you get stuck like this?
- If the trachea becomes constricted, the baby may have difficulty breathing .
- If the esophagus becomes narrowed, the baby may have difficulty eating, breastfeeding , or swallowing.
This is a congenital defect. This means that the baby is born with this condition while still in the womb. Sometimes it can be serious, but the best part is that it can be successfully treated with surgery.
How is the aorta usually formed? What happens in a vascular ring?
Let's look at how a baby's aorta is normally positioned.
Normally, the aorta starts in the lower left chamber of the baby's heart (left ventricle). It then goes up the trachea, curves into an arch (aortic arch), and then goes down the trachea again (descending aorta). From this arch and the descending part, many smaller blood vessels branch off to supply blood to different parts of the body.
However, in a baby with a condition called ``Vascular Ring'', this large artery ``(Aorta)'' or its branches, the trachea, the esophagus, or both, wraps around it like a ring, either completely or partially. That's why it's called ``Vascular Ring''.
Imagine, this is like wrapping a water pipe in our garden around the root of a tree, reducing the amount of water flowing.
What are the main types of `(Vascular Ring)`?
There are several ways in which this `(Vascular Ring)` can form. The three most common types are:
1. `Double Aortic Arch`: In this, the aorta starts out normally, then splits into two arches. These two arches surround and compress the baby's windpipe, ``Trachea``, and ``Esophagus``. Then the two arches join on the other side and become one blood vessel again.
2. Right Aortic Arch: Here, the aorta starts incorrectly, on the right side of the trachea instead of the left. Then, a normal blood vessel starts incorrectly and goes behind the esophagus. This branch gives rise to another artery (the left subclavian artery ) that carries blood to the baby's left arm. This ring is completed by the remnant of a blood vessel that was open during fetal life and then closes (the Ligamentum Arteriosum). These blood vessels can come together and compress the baby's trachea, esophagus, or both.
3. Aberrant Right Subclavian Artery (RSA): This is also called Arteria Lusoria. Normally, this artery starts from the Brachiocephalic Trunk, one of the three arteries that come from the Aortic Arch. However, in this case, the Aberrant RSA starts directly from the Aortic Arch. It is not a complete ring , so it may not cause symptoms.
How common is this `(Vascular Ring)` condition?
Vascular Ring is a very rare condition . Not even one in 100 babies gets it. Even with congenital heart defects, between 1% and 3% of them get vascular ring. So, it's not something that happens to a lot of people.
Who is more likely to develop this condition?
This condition can occur in babies of any race or ethnicity. Although the exact cause is unknown, it has been found to be twice as common in male babies as in female babies .
What causes this `(Vascular Ring)` to form?
Scientists still don't know exactly why this ``vascular ring'' forms during fetal development. It often happens that as the baby grows in the womb, there are parts of the aorta that should just fall off. However, it is thought that this condition occurs when those parts don't fall off .
What are the symptoms of a Vascular Ring?
Whether or not a vascular ring shows symptoms, and if so, when, depends on the type and how severely it compresses the trachea or esophagus.
Some babies may show symptoms as infants . Others may develop symptoms when they are a little older, or later in life. Surprisingly, some people may not show any symptoms at all .
Sometimes, a person may have had difficulty breathing or swallowing for a long time, and despite seeing a pulmonologist or a gastroenterologist for treatment, they may not be able to find out exactly what the problem is.
Symptoms that occur if the trachea is affected:
The trachea is the windpipe. So if it becomes narrowed, you may see symptoms like these:
- Frequent cough .
- Frequent respiratory infections (e.g. pneumonia).
- Nasal flaring ( flaring of the nostrils when breathing).
- An abnormal sound when breathing (e.g., `(Wheezing)` - a wheezing sound from the chest, `(Stridor)` - a loud sound from the throat).
- Respiratory Cyanosis is a bluish discoloration of the skin due to difficulty breathing.
Symptoms that occur if the esophagus is affected:
The esophagus is the food pipe. If it becomes narrowed, you may experience symptoms such as:
- Acid reflux .
- Failure to thrive , not gaining weight, not being properly nourished .
- A feeling like something is stuck in your throat .
- Difficulty eating , frequent choking while eating.
- Difficulty swallowing (Dysphagia), especially when swallowing solid foods.
- Frequent vomiting .
Other heart symptoms:
Sometimes people with Vascular Ring may also have other congenital heart defects. In this case, you may also see symptoms like:
- An abnormal sound heard in the heart is ``Heart Murmur''.
- Palpitations (fast or irregular heartbeat).
- Difficulty breathing (Dyspnea).
How is this `(Vascular Ring)` condition diagnosed? (Diagnosis)
If a doctor suspects a vascular ring, they may perform several tests to confirm the condition:
- Chest X-ray: This takes pictures of the organs inside the baby's chest. This is often the first test done.
- CT scan: This can also take clear pictures of things inside the body, especially the heart, trachea, and esophagus.
- Echocardiogram: Also called an echo, this takes video-like pictures of the baby's heart and aorta moving.
In addition to these tests, other tests may be done to see what condition the trachea or esophagus is in:
- Barium Swallow / Esophagogram: In this test, a special liquid called barium is given to the baby to drink. An X-ray is then taken to see how the barium moves down the esophagus. This test can detect if a vascular ring is blocking the esophagus.
- Bronchoscopy: In this, a thin tube with a small camera and light is passed through the baby's mouth or nose, through the windpipe (trachea) and into the lungs, to examine the inside.
- Upper Endoscopy: This is also a tube. But it is passed through the mouth and down the esophagus to look inside.
What are the treatments for this `(Vascular Ring)`?
If a vascular ring is causing the baby's trachea or esophagus to become constricted, causing difficulty breathing or eating, surgery may be necessary .
However, not all vascular rings need to be surgically repaired during infancy. However, some types, such as double aortic arch, require surgery sooner.
The type of surgery performed depends on the baby's condition, the type of vascular ring, and how severe it is. The surgery usually involves:
- Cutting and separating a portion of the vascular ring to reduce pressure.
- Removing a small piece of the aorta or other artery.
Most of the time, this surgery is done through a small incision on the side of the baby's chest (an open procedure - `(Thoracotomy)`) . This means that a slightly larger incision is needed. However, rarely, for slightly older children, it is possible to perform a minimally invasive procedure .
Are there ways to prevent the formation of this `(Vascular Ring)`?
In fact, scientists still don't fully understand why the ``vascular ring'' forms during the embryonic stage, so there is currently no specific method to prevent it .
What kind of future can someone with this condition expect?
Surgery to create a Vascular Ring is very safe and successful . Although some symptoms may persist for several months after surgery, most people are almost completely symptom-free within a year .
Most people will never need to have surgery again. However, very rarely, another surgery may be needed.
Even after surgery, you may need to see specialists for advice (follow-up) for years. These may include:
- A cardiologist.
- A doctor who specializes in the digestive system (Gastroenterologist).
- A doctor who specializes in the respiratory system (Pulmonologist).
What else should I ask the doctor about Vascular Ring?
If you or your child has a condition called ``Vascular Ring'', it's a good idea to ask your doctor these questions:
- What type of `(Vascular Ring)` is this?
- Is this around my trachea, esophagus, or both?
- Do you recommend surgery? If so, is it open or minimally invasive?
- How long will it take to heal?
- Will my symptoms completely disappear after surgery?
- Should I see other specialists?
- Do I have other heart conditions? If so, can they be treated at the same time as this surgery?
In summary, here are the things we need to remember (Take-Home Message):
Vascular ring is a congenital condition in which a baby's aorta is abnormally formed, causing pressure on either the trachea or esophagus, or both. This can cause difficulty breathing or swallowing.
The most important thing is that this condition can be successfully corrected with surgery and the symptoms can be eliminated.
If you have any further questions about this, don't hesitate to talk to your doctor. They will give you all the information you need.
` Vascular Ring, Aorta, Trachea, Esophagus, Birth defects, Breathing difficulties, Eating difficulties
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