Is your little one's heart's main blood vessel blocked? Let's learn about this (Coarctation of the Aorta)!

Have you ever wondered how amazingly our little hearts work? But sometimes, due to certain congenital problems, the functioning of this heart can be slightly disrupted. One such heart condition that can occur in some babies is called `(Coarctation of the Aorta)`. Even though the name may sound a bit complicated, don't worry. Let's talk about this simply.

What is `(Coarctation of the Aorta)`? To put it very simply...

Simply put, Coarctation of the Aorta is a narrowing or narrowing of the aorta, the main blood vessel that carries oxygen-rich blood from your baby's heart to the rest of the body. This is a congenital heart defect.

Imagine, a lot of vehicles are moving very fast on a big road. But what happens if you narrow the road at one point and only allow one lane of traffic? Traffic jams occur, and drivers start to move, right? That's what happens in this situation too. It becomes difficult for blood to flow properly through the blockage in the aorta.

Most often, this narrowing (coarctation) occurs before the branches that carry blood from the aorta to the lower body, such as the legs, divide. What causes this? The blood pressure increases in the upper part of the baby's body, such as the arms, but decreases in the lower part of the body, such as the legs. This large difference in blood pressure between the upper and lower parts of the body is a key feature of this disease. Even if there are no other symptoms, doctors may be suspicious when they see this blood pressure difference.

According to statistics in the United States, about one in 1,700 babies born each year may have this condition (Aortic Coarctation). Some babies may also have other congenital heart diseases along with this.

What symptoms do children show when they develop this condition?

These symptoms depend on how much the aorta is narrowed. Usually, if there is a slight narrowing, symptoms will start to appear within a week or two after birth. However, if the narrowing is less severe, symptoms may not appear until the baby is older, or they may never appear at all.

Symptoms of newborn babies

If a newborn baby has this condition, they may experience symptoms like:

• Constant drowsiness and reluctance to drink milk
• Rapid heartbeat (fast pulse)
• Excessive sweating
• Constant irritability, crying
• Pale or gray skin
• Rapid or labored breathing
• Difficulty drinking milk

If a baby has severe coarctation of the aorta , it can go into shock and be life-threatening if not recognized and treated quickly. However, some babies may not show any symptoms because the blockage is so small.

Symptoms in young children and young adults

Older children and young adults with Aortic Coarctation may experience symptoms such as:

• Frequent headaches
• High blood pressure
• Frequent nosebleeds
• Pain in the legs when exercising, running, or jumping

Some children may not experience any symptoms at all. Instead, the problem is first identified as high blood pressure during a routine well-check.

When an adult experiences these symptoms, it is often due to a reoccurrence of aorta narrowing after previous treatment. It is very rare for this condition to go undiagnosed until adulthood.

Why does this situation occur? What are the reasons?

Experts still don't know the exact cause of CoA. However, it is believed that there is a genetic component. That is, certain gene changes that occur while the baby is in the womb can cause the baby's aorta to not develop properly.

Sometimes these genetic changes can be passed down through families. Research has shown that if you have CoA, your baby is more likely to develop CoA or other heart disease than someone who doesn't have CoA.

Also, the risk of developing CoA is higher with certain genetic conditions. For example, babies born with the genetic condition Turner syndrome are more likely to have not only Coarctation of the Aorta, but also other birth defects such as bicuspid aortic valve, a defect in the heart's valves.

Cause of `(CoA)` alone without other heart defects

The main cause of isolated CoA is an abnormal closure of a small blood vessel called the ductus arteriosus during fetal development. The ductus arteriosus is a small blood vessel that connects the fetal aorta to the pulmonary artery. The lungs are not functioning while the baby is in the womb, so this tube helps the baby get the oxygen-rich blood it needs.

After the baby is born, the lungs start working. Then, since this `(ductus arteriosus)` is no longer needed, it starts to close on its own within a few days. However, when it closes, some of the tissue in that duct can merge with the tissue of the `(Aorta)`. In that case, when the `(ductus arteriosus)` is forced to close, the aorta can also become narrowed (coarctation)`.

What complications can occur due to this condition?

If this condition (Coarctation of the Aorta) is left untreated for a long time, complications such as:

• High blood pressure (hypertension) throughout the body.
• The heart muscle becomes thicker than normal (left ventricular hypertrophy).
• The buildup of plaque in the coronary arteries, which supply blood to the heart, occurs earlier than normal - this is called coronary artery disease.
• An abnormal bulge (aneurysm) or tear (dissection) in the aorta.
• A brain aneurysm (bulging of a blood vessel in the brain).
• Heart failure is a condition in which the heart is unable to pump blood properly.

This `(CoA)` condition is most dangerous if it is not recognized and treated. Therefore, it is very important to recognize it as soon as possible, at an early age, and to undergo the necessary treatment and regular check-ups (monitoring).

How do doctors diagnose this? (Diagnosis)

Pediatric cardiologists usually diagnose this condition (Coarctation of the Aorta) in infancy or early childhood. How quickly it is diagnosed depends on how severe the symptoms are.

Babies with milder symptoms are recognized within a few days of birth. However, babies with milder symptoms, or none at all, may not be recognized until they are older and develop high blood pressure. It is very rare for this to be recognized in adulthood.

This condition is often diagnosed in infants and young children because of certain suspicious features (red flags) seen during a physical exam. Such features include:

• The baby has high blood pressure in the arms and upper body, but low blood pressure in the legs and lower body.
• There is a difference between the pulse rate in the neck and the pulse rate in the groin.
• When the doctor places the stethoscope on the baby's back and listens, a distinctive, harsh sound coming from the heart (a 'harsh heart murmur') is heard.

Some newborns are diagnosed with the disease before they even show symptoms. How do you know? A test called ``pulse oximetry`` that measures the oxygen levels in their blood shows that the oxygen levels are low. Low oxygen levels can be a sign of a serious congenital heart disease, so these babies are tested to find out exactly what's wrong.

To confirm this `(CoA)` condition, doctors usually use an `(Echocardiogram)`, a heart scan, or `(echo)`. They may also do tests like `(CT scan)` or `(MRI scan)` to learn more about the shape and structure of the baby's aorta.

Are there other heart diseases associated with ``Coarctation of the Aorta''?

Yes, babies with CoA can be diagnosed with other heart conditions. For example, between 45% and 75% of people with CoA also have a condition called bicuspid aortic valve. This means that the valve that carries blood from the heart to the aorta has only two leaflets instead of the three that it should normally have.

Not only that, but `(CoA)` can also be accompanied by the following situations:

• Having a hole in the heart - that's called an `(atrial septal defect)` or `(ventricular septal defect)`.
• A blood vessel that was present during fetal life (`ductus arteriosus`) remains open for longer than expected - this is called ``patent ductus arteriosus``.
• Aortic arch hypoplasia or hypoplastic left heart syndrome.
• Stiffness of a heart valve - that is, aortic valve stenosis or mitral valve stenosis.

Cardiac surgeons look at all of these things in your baby's heart and create a treatment plan that's specific to them. This means that treating a baby with multiple heart defects can be a little more complicated than treating a baby with just one CoA.

What are the treatments for this?

Treatment options depend on your child's age, the extent of the narrowing of the aorta, and whether he or she has other heart defects. Surgery is the best way to treat coagulopathy in infants and young children. For older children, if the narrowing is less severe, cardiac catheterization, a less invasive procedure than surgery, may be appropriate. It is also used in children and adults who have had a reoccurrence of the narrowing after previous treatment.

Surgery

There are several main types of surgery performed to correct this `(CoA)` condition:

• Resection with end-to-end anastomosis: If the coarctation is relatively small, the surgeon may resect the blocked part of the baby's aorta and rejoin the remaining ends.
• Resection with extended end-to-end anastomosis:If the baby's aortic arch is also blocked, the surgeon can cut out the blocked part of the aorta and connect the lower part of the descending aorta to a long incision in the aortic arch. This is the best option when the baby has transverse aortic arch hypoplasia and aortic coarctation.

Babies who show severe symptoms after birth may also need to be given medication before surgery. For example:

• A medicine called `(Prostaglandin (PGE-1))` can be given to keep the baby's `(ductus arteriosus)` open. This will allow the baby to get the oxygen they need and keep them stable until they are ready for surgery.
• You can also give the baby medicine to help his heart pump blood.

Cardiac catheterization

If your child has reduced aortic narrowing, or if the narrowing has recurred after surgery, the doctor may suggest treatments such as:

• Balloon angioplasty: The surgeon uses a small balloon to widen the narrowed part of the child's aorta.
• Balloon angioplasty with stent placement: While the surgeon is widening the child's aorta, he or she also inserts a small tube, called a stent, to keep it from getting blocked again.

When should I take my child to the doctor? (Re-examinations)

Your child's medical team will tell you when to bring your child in. Throughout your child's life, they will need to have follow-ups with a congenital heart disease specialist. This specialist will:

• Monitor the child's blood pressure regularly.
• Performing scans (imaging tests) at regular intervals to check the child's heart function and for signs of complications.
• Providing advice on heart-healthy eating patterns and exercise.
• Prescribing medications and changing their dosage as needed.

How long can someone with this condition live?

With advanced diagnostic and treatment methods, people with Coarctation of the Aorta can now live to be at least 60 years old. In the past, the average life expectancy for people with this condition was about 35 years. So this is really good news.

If your baby has Coarctation of the Aorta, you may be wondering why it happened. We can't always pinpoint the exact cause of congenital heart disease. But we do know that early detection and treatment can greatly reduce the impact of this condition on a child's life.

The medical team is always there to help your child. They are ready to answer any questions you may have and to help you understand how this `(CoA)` diagnosis will affect your child. You may also find it helpful to talk to other parents of children with this type of heart condition.

Important things to keep in mind (Take-Home Message)

I hope you now have some understanding of the condition we have been discussing called ``Coarctation of the Aorta''. Here are some of the most important things to remember:

• This is a congenital heart defect ; a blockage in the main artery that carries blood from the heart to the body.
• Symptoms may be present in infancy or may develop later. If you notice excessive sleepiness, difficulty breathing, or a reluctance to breastfeed in your baby, seek medical advice immediately.
• Early diagnosis and treatment of the disease gives the child a greater chance of living a normal, healthy life.
• This condition can be successfully managed with surgery and other treatments.
• Lifelong specialist medical supervision is essential even after treatment.

Don't be afraid. Medical science is very advanced today. There are skilled doctors who can provide the best treatment for your child. The most important thing is that you are aware of this, pay attention to your child's changes, and seek medical advice on time.

` Coarctation of the Aorta, Heart Disease, Pediatrics, Congenital Heart Disease, Aortic Stenosis, Child Health, Blood Pressure