Eisenmenger Syndrome - Symptoms, Causes, Diagnosis, and Treatment

What Is Eisenmenger Syndrome?

Eisenmenger syndrome occurs when excessive blood flow through the arteries from the heart to the lungs leads to pulmonary hypertension(high blood pressure in the lung vessels and the right side of the heart). This condition causes blood shunting between the heart's left and right sides due to an abnormal connection. Typically resulting from untreated congenital heart defects, Eisenmenger syndrome can cause permanent lung damage and other complications over time.

Who Is Affected by Eisenmenger Syndrome?

Eisenmenger syndrome typically develops in young adults and children with uncorrected congenital heart defects, such as a ventricular septal defect (VSD), which is a hole in the septum between the heart's ventricles. It can also result from other unrepaired congenital heart issues such as atrial septal defect, atrioventricular canal defect, cyanotic heart disease, Tetralogy of Fallot, patent ductus arteriosus, and truncus arteriosus. Children with Down syndrome are also at higher risk for congenital heart defects and Eisenmenger syndrome, with 25 % to 50 % of adults with Eisenmenger syndrome having Down syndrome.

What Are the Symptoms?

Symptoms of Eisenmenger syndrome have been mentioned below:

• Pain or tightness in the chest.

• Cyanosis (bluish or grayish skin discoloration due to decreased oxygen levels).

• Coughing up blood.

• Dizziness or fainting.

• Headaches.

• Tiredness.

• Shortness of breath with activity.

• Clubbing of nails (large, rounded nails in the finger or toe).

• Palpitations (skipped or racing heartbeats).

• Numbness or tingling in fingers or toes.

• Shortness of breath while at rest.

How Is It Caused?

The most common cause of Eisenmenger syndrome is an unrepaired hole between the heart chambers or the heart's main blood vessels. A shunt is a congenital heart defect; that is, it is present at birth.

Various conditions of the heart can cause Eisenmenger syndrome, which is as follows:

• Ventricular Septal Defect: It is the most common cause of this condition. In this, there is a hole between the ventricles of the heart.

• Atrioventricular Canal Defect: This condition involves a hole between the lower and upper heart chambers.

• Atrial Septal Defect: In this, there is a hole between the heart's upper chambers.

• Patent Ductus Arteriosus: This condition involves an opening between the aorta and the pulmonary artery and the aorta.

The above four heart defects change the normal pathway of blood flow in the heart and, thus, the body. Hence, there is an increase in blood pressure within the pulmonary vessels. After some time, these changes damage the smaller blood vessels in the lungs. These damaged blood vessels make it difficult to transport blood to the lungs.

How Can It Be Diagnosed?

Initially, a person will be asked questions about the signs and symptoms one is facing along with the family history and medical and personal histories. Then, a physical examination will be conducted. The physician will require them to undergo various tests to confirm the diagnosis.

They are as follows:

• Blood Tests: The most common test is the complete blood count test. There can be increased red blood cells. Also, this can be used to test kidney and liver function and iron levels.

• Electrocardiogram (ECG): This helps in assessing the electrical activity of the heart.

• Echocardiogram: This is the ultrasound of the heart. It helps to check the blood flow through the heart.

• Chest X-ray.

• Computerized Tomography (CT) Scan: This test utilizes X-rays to form cross-sectional images of specific body parts. Thus, a detailed study of the heart and lungs can be done.

• Walking Test: It is a six-minute walking test to assess an individual's tolerating level while performing a mild level of exercise.

• Magnetic Resonance Imaging (MRI): This test utilizes radio waves and magnetic fields to form detailed images of the blood vessels present in the lungs.

• Cardiac Catheterization: This test uses a catheter and a dye to check for the blood flow in the heart.

How Can It Be Treated?

The main objectives of managing Eisenmenger syndrome are to manage symptoms, prevent serious complications, and improve the quality of life. These objectives can be achieved through either surgery or medication.

1. Medications

Medications are the commonly used mainstream treatment for Eisenmenger syndrome. They cannot cure the condition, but they can improve the quality of life. The patient should have regular check-ups while taking medications. During follow-ups, the physician will check for changes in fluid levels, blood pressure, and pulse rate.

Various medications that can be prescribed for the management of Eisenmenger syndrome are as follows:

• Blood-thinning medications or Aspirin.

• Heart rhythm drugs.

• Iron supplements.

• Antibiotics.

• Drugs for pulmonary arterial hypertension.

• Sildenafil and Tadalafil.

2. Surgery

Physicians or specialists do not recommend surgical procedures to close the shunt in the heart after the development of Eisenmenger syndrome.

Various surgeries or procedures that can be done to manage symptoms or complications of this condition have been mentioned below:

• Phlebotomy or Blood Withdrawal: This procedure will be recommended if the red blood cell count becomes extremely high and causes symptoms like headaches, vision, and concentration issues. This procedure should not be done regularly and requires consent from a heart specialist.

• Transplant: If none of the treatments works, the patient may require a heart transplant.

Are There Any Complications?

Eisenmenger syndrome can prove to be a life-threatening condition. The prognosis can vary among persons depending on the condition's cause and other medical issues.

Following are the complications that can develop if this condition is not managed and monitored:

• Decreased levels of blood oxygen.

• Arrhythmias (irregular heartbeats).

• Heart failure.

• Sudden cardiac arrest.

• Stroke.

• Bleeding in the lungs.

• Infection in the heart

• Kidney problems.

• Gout.

• Pregnancy risks.

Is It Possible to Prevent Eisenmenger Syndrome?

The best way to prevent Eisenmenger syndrome is to undergo early repair of congenital heart defects.

What Is the Prognosis for Individuals With Eisenmenger Syndrome?

Individuals with Eisenmenger syndrome typically have reduced life expectancies due to potential complications associated with the condition. However, some may live into middle age. Survival rates depend on the severity of symptoms and the specific congenital heart defect involved.

What Are the Best Ways to Manage the Health of Eisenmenger Syndrome?

To minimize complications from Eisenmenger syndrome, consider the following:

• Maintain a diet low in sodium.

• Stay hydrated and receive necessary vaccinations to prevent infections.

• Adhere to all prescribed medications and therapies recommended by the cardiologist.

• Take antibiotics before dental procedures or surgeries.

Avoid:

• High altitudes.

• Saunas, steam rooms, or hot tubs can lead to sudden drops in blood pressure.

• Smoking or using tobacco products.

• Engaging in strenuous physical exercise.

Conclusion

Eisenmenger syndrome is caused as a complication of untreated congenital heart defects, which can be life-threatening. It should be managed as early as possible to improve the prognosis. A patient can consult a specialist online through medical platforms to learn more about this issue.