Have you ever heard of babies being born with a hole in their heart? Most of the time, if treated quickly, this is not a problem. However, sometimes, if these conditions are not treated, they can develop into very serious complications over time. That's what we call Eisenmenger Syndrome. Although this is a somewhat complex topic, we will talk about it very simply today, in a way that you can understand.
Simply put, what is Eisenmenger syndrome?
To understand this, let's first remember how the heart works. Imagine that our heart is like a four-room house. Two upper chambers and two lower chambers. The right side of the heart contains "dirty" blood that has been circulating throughout the body, low in oxygen . This blood needs to be "cleaned" by sending it to the lungs to be oxygenated. The left side of the heart contains "clean" blood that has been flowing from the lungs, full of oxygen. This blood is pumped throughout the body. Normally, blood does not mix between these two sides.
Now, imagine that you are born with a hole in the wall between the chambers of the heart (for example). The pressure on the left side of the heart is higher than on the right side. So, in the early stages, some of the oxygen-rich blood goes through that hole to the right side and mixes with the oxygen-poor blood. We call this a left-to-right shunt . This causes an unnecessary increase in the amount of blood going to the lungs.
Over the years , as more blood is pumped into the lungs, the delicate blood vessels in the lungs become damaged, thickened, and the pressure builds up. This is what we call pulmonary arterial hypertension .
Eventually, the pressure inside the lungs increases so much that the pressure on the right side of the heart becomes higher than on the left side. What happens then? The blood flow is completely reversed. That means that now the "dirty" blood, which is low in oxygen, is not going to the lungs and being cleaned, but is going straight through that hole to the left side and being pumped throughout the body. We call this a right-to-left shunt .
This collection of symptoms and complications caused by the pumping of oxygen-poor blood into the body is what we call Eisenmenger Syndrome .
What are the symptoms of this condition?
The main symptoms are those caused by not getting enough oxygen to the body (hypoxemia). These symptoms usually appear in adolescence or adulthood, but can sometimes begin in childhood.
| Symptom | Description |
|---|---|
| Blue skin (Cyanosis) | A blue coloration of the lips, gums, cheeks, hands, and feet due to low oxygen in the blood. This can be difficult to recognize in someone with darker skin. |
| Difficulty breathing | Shortness of breath, especially when walking or doing any activity. |
| Chest pain | Feeling of chest pain or tightness due to pressure on the heart. |
| Dizziness and lightheadedness | A condition that can occur due to a decrease in the amount of oxygen reaching the brain. |
| Extreme fatigue (Fatigue) | Feeling tired all the time because the body's cells don't have enough oxygen to produce enough energy. |
Why does this happen? What are the underlying heart defects?
As we discussed earlier, this condition is caused by an untreated congenital heart defect. Here are some examples:
- Atrial septal defect ( ASD ): A hole in the wall between the two upper chambers (atria) of the heart.
- Ventricular septal defect ( VSD ): A hole in the wall between the two lower chambers (ventricles) of the heart.
- Patent ductus arteriosus (PDA): An abnormal connection between the aorta and the pulmonary artery that should close after birth.
- Atrioventricular septal defect: A large hole in the middle of the heart, along with problems with the heart valves .
- Single-ventricle defect: Only one of the two lower chambers of the heart functions properly.
Other complications that may occur due to this condition:
Eisenmenger syndrome doesn't just affect the heart and lungs. Low oxygen levels in the body can lead to many other complications.
- Secondary erythrocytosis: The body produces more red blood cells than it needs to replace oxygen, which can thicken the blood and increase the risk of blood clots.
- Abnormal bleeding: Things like coughing up blood, nosebleeds, heavy menstruation, and bleeding gums.
- Heartbeat irregularities (Arrhythmias): Irregular heart rhythm.
- Blood clots: If these blood clots travel to the brain, serious conditions such as stroke can occur.
- Brain abscesses.
- Clubbed fingers.
- Impaired kidney function.
- Heart failure.
- Heart infection (infective endocarditis).
- Iron-deficiency anemia.
High risk during pregnancy
This is a very important point. Pregnancy for a woman with Eisenmenger syndrome is extremely dangerous, even life-threatening . The heart and circulatory system cannot handle the stress during pregnancy, which can lead to death for the mother or the baby, or even both.
If you have this condition and are of childbearing age, be sure to talk to your doctor about the most appropriate birth control method . Your doctor will also explain other options for having children, such as adoption.
How do doctors find this?
Your doctor may suspect this based on your symptoms and medical history. They will perform several tests to confirm it.
- Blood tests: To check for red blood cell count and other complications.
- Echocardiogram (Echo): A scan that looks at the function of the heart, its structure, and the location of the hole.
- Electrocardiogram (ECG/EKG): To check the electrical activity and rhythm of the heart.
- Heart Catheterization: A very important test that involves inserting a small tube into the heart and lungs to accurately measure the pressure there.
- Pulse oximetry: Measuring the oxygen level in the blood with a small device attached to the finger.
- Exercise stress test: Monitoring how the heart and oxygen levels change during exercise.
How is it treated? Can this be cured?
The important thing to understand here is that once Eisenmenger syndrome has developed, the original heart defect (hole) that caused it cannot be surgically closed . If that is done, the heart will not be able to withstand the high pressure that has already built up in the lungs, and very serious complications and even death can occur.
Therefore, the main goals of treatment are to control symptoms, improve quality of life, and prevent complications.
- Pulmonary hypertension (PAH) therapies: These are the mainstay of treatment. These medications reduce the pressure in the blood vessels in the lungs, relieving symptoms such as shortness of breath.
- Antibiotics: Antibiotics are given before certain medical procedures, such as a tooth extraction, to prevent the spread of infection to the heart.
- Exercise under medical supervision: This can help improve your breathing and strength. Never exercise on your own without consulting your doctor.
- Iron pills or injections: To treat iron deficiency if it occurs.
- Supplemental oxygen: This is recommended for some selected patients to improve oxygen levels in the blood.
- Blood thinners: This is something that should be used with great caution and only on medical advice.
- Heart or heart and lung transplant: An option for end-stage patients whose condition cannot be controlled with medication.
How should I take care of myself?
While living with this condition, there are a few things you need to do on your part.
- Avoid smoking completely. This will make the condition worse.
- Drink plenty of water to prevent dehydration.
- Eat a nutritious diet.
- Get the necessary vaccines on time to protect against infections.
- Seek counseling to cope with the stress of living with such a long-term illness.
You will be under the supervision of a cardiologist and a pulmonologist for the rest of your life, so it is very important to follow their instructions exactly.
Take-Home Message
- Eisenmenger syndrome is a serious, irreversible complication that occurs when a congenital heart defect (such as a hole in the heart) is left untreated for a long time.
- Due to the high pressure in the lungs, oxygen-poor blood is pumped directly into the body instead of going to the lungs.
- The main symptoms are difficulty breathing and blue lips and fingertips (cyanosis).
- Once this condition occurs, the original heart defect cannot be surgically corrected . Treatment only focuses on managing symptoms and complications.
- Pregnancy is life-threatening for women with this condition, so be sure to talk to your doctor about appropriate birth control.
- It is very important to remain under specialist medical supervision and receive proper treatment throughout life.
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