Let's learn about Esophageal Atresia, a rare condition in which a newborn baby's esophagus is not connected to the stomach.

Does your newborn start coughing and gagging as soon as he drinks some milk? Does he foam at the mouth? Or does his skin look blue? As a parent, it's normal to feel scared and worried when you see these things. Symptoms like these can sometimes be a sign of a very rare but serious birth defect called Esophageal Atresia (EA) . Don't be scared when you hear this name. Today, we'll talk about it all in a very simple way that you can understand.

What is Esophageal Atresia (EA)?

Simply put, Esophageal Atresia is a birth defect. It occurs when your baby's esophagus, the tube that carries food from the mouth to the stomach, is not fully formed. The word "atresia" means that a passageway in the body is blocked or blocked. In this condition, the esophagus is blocked where it should connect to the stomach. As a result, the baby has no way to eat or drink normally.

Imagine this, it's like a water pipe breaking in the middle and separating into two parts.

This situation can be a little more complicated. About 90% of babies with EA also have another problem. It's called a tracheoesophageal fistula (TEF) . This is when the poorly formed oesophagus connects to the windpipe, the windpipe. This is very dangerous because things the baby swallows, even saliva, can go into the lungs instead of the stomach. If this happens, the baby will have difficulty breathing, choke, and may even develop lung infections.

What are the main types of this condition?

Esophageal atresia is divided into several main types. These are classified based on where the esophagus is blocked and whether and how it is connected to the windpipe. This can be a bit complicated, but to make it easier to understand, see the table below.

Doctors will conduct various tests to determine which of these types your baby has. Treatment is planned accordingly.

What are the symptoms that suggest that the baby has this condition?

There are three main signs that doctors and nurses use to quickly diagnose this condition. They are also called the "Three Cs."

• Coughing
• Choking (stuck)
• Cyanosis (blue discoloration of the skin)

Cyanosis is when the skin, especially the lips and fingertips, turns blue when the body does not receive enough oxygen.

In addition to these main features, you can see other things:

• The baby's mouth is covered in a lot of foamy mucus.
• Drooling more than normal or vomiting milk.
• When I try to give him some milk, he feels nauseous and chokes.
• It's getting difficult to breathe, and there's a strange sound when you breathe.

Why does this happen to babies? What is the main reason?

We call this a birth defect. It is caused by a change that occurs while the baby is growing in the womb. Normally, in the early stages of the fetus, the esophagus and trachea are both a single tube. Later, it splits into two parts and develops into two separate tubes. The main reason for the development of Esophageal Atresia is that the structure that is one tube separates and stops developing completely.

However, scientists still have not been able to find a definitive answer to the question, "Why does that growth stop halfway?" They believe that both genetic factors and environmental factors may have an impact on this. That is, certain changes that occur in the baby's DNA and certain environmental influences that the mother faces during pregnancy may be the cause.

Are there any risk factors?

Although there is no proven direct cause of the condition, researchers have identified several common characteristics of babies born with EA. These may slightly increase the risk:

• The mother's age is over 35 and/or the father's age is over 40.
• Having children through artificial insemination methods (like IVF, IUI).
• Having twins or triplets.

Additionally, EA is often seen in association with other birth defects and genetic syndromes. For example:

• Trisomy (13, 18 or 21)
• VACTERL association
• CHARGE syndrome
• Congenital heart disease
• Other obstructions of the digestive system (GI atresias)
• Kidney and genitourinary system defects

How do doctors diagnose this condition? (Diagnosis)

Most of the time, this condition is diagnosed after the baby is born. However, sometimes, prenatal scans can provide clues.

• Before the baby is born: If during your anatomy scan at around 20 weeks, the amount of amniotic fluid around the baby is much higher than normal (this is called polyhydramnios ), the doctor may be suspicious. This is because the baby normally swallows this amount of fluid. If the baby can't swallow, the fluid builds up. Also, if the baby's stomach appears empty (with little or no stomach bubble) during the scan, that's another sign.
• After the baby is born: If the baby shows the symptoms we discussed earlier (coughing, choking, blueness) right after birth, doctors immediately suspect this. The simplest test to confirm this is to insert a thin tube (nasogastric tube) through the baby's nose or mouth and try to pass it into the stomach. If the esophagus is blocked, the tube cannot go into the stomach. It stops halfway.

Then, an X-ray is done to confirm this and to see exactly what type of defect the esophagus has. The X-ray can also see if fluid has entered the lungs or air has entered the stomach. After this diagnosis, the doctor will also check the baby for other related birth defects.

How is it treated? Can this be cured?

Yes! This is definitely a treatable condition. The only treatment for this is surgery . Most of the time, this surgery is done before the baby is born.

Preoperative management

Before performing the surgery, the doctors take several steps to stabilize the baby's condition.

• Stabilizing breathing: To prevent mucus and phlegm from accumulating in the throat from reaching the lungs, they are often removed with a tube (suction). If the baby has difficulty breathing, they are connected to a ventilator.
• Providing safe nutrition: Since the baby cannot be fed by mouth, the necessary nutrition is provided through a vein ( parenteral nutrition ) or through a tube placed directly into the stomach ( enteral nutrition ).
• Preventing infections: IV antibiotics are given to prevent lung infections (pneumonia).

If the baby is premature, underweight, or has other serious defects, such as a heart defect, the baby will need to stay in the neonatal intensive care unit (NICU) until those conditions stabilize before surgery.

Surgery (Surgical Repair)

Once the baby is determined to be ready for surgery, the surgeon performs the surgery. The surgery has two main goals:

1. Connecting two separated parts of the esophagus (this is called anastomosis ).

2. Closing the unnecessary connection (fistula) between the pharynx and trachea.

With today's advanced technology, this surgery is often performed without opening the chest, but rather by inserting a camera and instruments through a few very small incisions (thoracoscopic surgery). This causes less pain for the baby and results in faster recovery.

What happens after the surgery?

After the surgery, the baby is taken back to the NICU for close monitoring. A few days later, a special X-ray called an esophagram is done to check if the incision has healed properly and if there are any leaks. Once everything is confirmed, the baby is gradually introduced to the oral feeding system. It takes some time for the baby to get used to the swallowing process.

What are the long-term problems that can occur after surgery?

Most babies recover completely and live normal lives. However, some children may experience some problems for a while after surgery. It is important to be aware of these.

• Swallowing difficulties: Some children may not have the muscles in their throat working properly. This can cause them to choke when they start eating solid foods. Food should be crushed well and given with fluids.
• Gastroesophageal Reflux Disease (GERD): This is when stomach acid flows back up the esophagus. This can cause heartburn and indigestion. If left untreated, it can damage the esophagus. This condition occurs in about half of children who have had EA surgery.
• Tracheomalacia: This is a weakening of the cartilage in the trachea. This can cause wheezing, frequent coughing, and frequent lung infections (bronchitis, pneumonia).

If you have any of these problems, don't panic. There are treatments for all of these. The most important thing is to talk to your doctor about it regularly and follow his or her instructions. You may also need to seek help from a Speech-Language Pathologist (SLP).