TEVAR (Thoracic endovascular aortic repair)

Thoracic endovascular aortic repair (TEVAR) is a minimally invasive method for treating descending thoracic aortic aneurysms. An aneurysm is a weakening region of the artery wall that bulges outward and can cause difficulties if not treated. TEVAR is generally safer than open surgery and allows for a speedier recovery in qualified people.

Procedure Description:

TEVAR (Thoracic endovascular aortic repair)

Thoracic endovascular aortic repair (TEVAR) is a minimally invasive method for treating descending thoracic aortic aneurysms. An aneurysm is a weakening region of the artery wall that bulges outward and can cause difficulties if not treated. TEVAR is generally safer than open surgery and allows for a speedier recovery in qualified people.

Disease Overview:

Thoracic aortic aneurysm

A thoracic aortic aneurysm is a weak spot in the body's major artery in the chest. The body's main artery is known as the aorta. When the aortic wall is weakened, the artery can widen. An aneurysm occurs when the vessel expands considerably. Thoracic aortic aneurysms are also known as thoracic aneurysms.

A thoracic aortic aneurysm can rupture the aorta or cause a life-threatening tear between the aortic wall layers. The tear is known as an aortic dissection. Rupture or dissection can cause abrupt death.

Disease Signs and Symptoms:

Thoracic aortic aneurysms usually grow slowly. There are frequently no symptoms, making it difficult to detect. Many begin tiny and stay small. Others get bigger over time. A thoracic aortic aneurysm's growth rate is difficult to predict.

As a thoracic aortic aneurysm progresses, symptoms may include back pain.

- Cough.

- A weak, scratchy voice.

- Shortness of breath.

- Pain or tenderness in the chest.

Symptoms of a thoracic aortic aneurysm rupture or dissection include:

- An acute, abrupt discomfort in the upper back that radiates downward.

- Pain in the chest, jaw, neck, or arms.

- Difficult breathing.

- Low blood pressure.

- Loss of awareness.

- Shortness of breath.

- Trouble swallowing.

Some aneurysms may never rupture or result in dissection.

Disease Causes:

Aneurysms can form anywhere in the thoracic aorta, including around the heart, the aortic arch, and the lower portion of the aorta.

Causes of thoracic aortic aneurysms can include:

1. Atherosclerosis is the hardening of the arteries. Plaque deposition on the arterial walls makes the arteries less flexible. Increased pressure can cause arteries to weaken and expand. High blood pressure and cholesterol levels raise the risk of atherosclerosis. This is more typical among older persons.

2. Genetic conditions. Younger adults with aortic aneurysms frequently have a hereditary etiology. Marfan syndrome, a hereditary disorder affecting the body's connective tissue, can produce weakening in the aortic wall.

3- Other genetic diseases associated with aortic aneurysms, dissection, and rupture include vascular Ehlers-Danlos, Loeys-Dietz, and Turner syndromes.

4- Inflammation of the blood vessels. Blood vessel inflammation conditions such as giant cell arteritis and Takayasu arteritis have been linked to thoracic aortic aneurysms.

5. An irregular aortic valve. The aortic valve connects the lower left cardiac chamber to the aorta. People born with an aortic valve with only two flaps rather than three are more likely to develop a thoracic aneurysm.

An untreated infection. A thoracic aortic aneurysm can form after an untreated infection, such as syphilis or salmonella.

6- Traumatic damage. Some patients who are wounded in falls or automobile accidents develop thoracic aortic aneurysms.

Disease Diagnosis:

Thoracic aortic aneurysms are frequently discovered when an imaging test is performed for another reason.

If you experience symptoms of a thoracic aortic aneurysm, your doctor may inquire about your family's medical history. Certain aneurysms can run in families.

Imaging tests can diagnose or screen for a thoracic aortic aneurysm. Tests can include:

1. Echocardiogram. This test employs sound waves to demonstrate how blood circulates through the heart and blood vessels, including the aorta. An echocardiography can be used to identify or test for thoracic aortic aneurysms.

2. Computerized tomography (CT). CT scans employ X-rays to provide cross-sectional images of the body, including the aorta. It can demonstrate the size and shape of an aneurysm.

3- Cardiac MRI. A cardiac MRI creates comprehensive images of the heart and aorta by combining magnetic fields and radio waves. It can help diagnose an aneurysm by displaying its size and location.

Disease Treatment:

The goal of treating a thoracic aortic aneurysm is to keep it from expanding and rupturing. Treatment is determined by the size and rate at which the aneurysm grows.

Treatment for a thoracic aortic aneurysm can include:

1. Watchful Waiting

2. Medicines

3. Surgery

Surgery for thoracic aortic aneurysms varies based on the patient's health and aneurysm location.

1. Open-chest surgery. This operation typically entails removing a section of the aorta that has been damaged by the aneurysm. The aortic segment is replaced with a synthetic tube known as a graft, which is sewed in place. Full healing could take a month or longer.

2. Aortic root surgery. This sort of open-chest surgery is performed to repair an enlarged portion of the aorta and prevent rupture. 

3. Endovascular aortic aneurysm repair (EVAR). The surgeon inserts a thin, flexible tube into a blood vessel, typically in the groin, and guides it to the aorta. A metal mesh tube, known as a graft, is inserted into the aneurysm location via the catheter's end. Small hooks or pins secure it in place.

4. Emergency surgery. A ruptured thoracic aortic aneurysm necessitates emergent open-chest surgery. This sort of surgery carries a high risk of complications. That is why it is critical to detect and treat thoracic aortic aneurysms before they burst, including lifelong health screenings and suitable preventive surgery.

Country wise cost comparison for TEVAR (Thoracic endovascular aortic repair):