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  • Writer's pictureShaun Nicosia

Aortic Aneurysms and Dissections Facts

Aortic Aneurysms and Dissection Facts

Understanding the Aorta and Its Job in Circulation

The aorta is the main artery that carries blood away from your heart to the rest of your body. The blood leaves the heart through the aortic valve. Then it travels through the aorta, making a cane-shaped curve that allows other major arteries to deliver oxygen-rich blood to the brain, muscles and other cells.

An aortic aneurysm is a weakened or bulging area on the wall of the aorta.

A problem with the aorta can quickly become a medical emergency. Serious problems with the aorta may include:

Aortic Aneurysm – May occur in either the chest (called a thoracic aneurysm) or anywhere along the aorta such as in the abdomen (abdominal aortic aneurysm).

Aortic Dissection

What is an Aortic Aneurysm?

Aortic dissection image

An aortic aneurysm is a weakened or bulging area on the wall of the aorta, which may occur anywhere along its length.

Aortic aneurysms can cause two problems:

Rupture: The weakened or ballooned area may develop a hole, called a rupture, that allows blood to burst out into the body.

Dissection: The blood pumped forcefully through the aorta can split the layers of the artery wall, allowing a build-up of blood to continually leak into the space, which further splits the artery wall.

An aortic dissection is a split between the layers of the aorta that traps blood coming from the heart. This can lead to aortic rupture or decreased blood flow (ischemia) to organs.

What are the Symptoms of an Aortic Emergency?

Some of the symptoms, such as chest pain and jaw pain, are generally associated with a heart attack. But sudden stabbing pain in the neck, jaw, abdomen, chest or shoulder, fainting, difficulty breathing and sometimes even sudden weakness may also be symptoms of an aortic event. Because the aorta travels from above the heart to below the navel, severe pain may occur at any place along this major vessel. Additional symptoms of a rupture may include clammy skin, nausea and vomiting or shock.

Aneurysms and dissections of the aorta are life-threatening medical emergencies.

How is an Aortic Aneurysm or Dissection Treated?

The two main treatment options are surgery and/or medications.

Surgery repairs or replaces the injured section of the aorta.

Medication lowers blood pressure and reduces risks of rupture. Medications wouldn't be a treatment option in an emergency, but they may be appropriate if your doctor recommends them.

Stats About Aortic Aneurysm and Dissection

Impact: According to the CDC’s most recent statistics, aortic aneurysms were the main cause of nearly 10,000 deaths in the United States in 2018.

Risk: In 2018, about 58% of people who died from an aortic aneurysm or aortic dissection were male.

Besides advanced age and genetics or family history, people who have the following conditions may be at higher risk for an aortic aneurysm or dissection:

High blood pressure. The increased force of blood can weaken the artery walls.

Genetic conditions, such as Marfan’s Syndrome, decrease the body’s ability to make healthy connective tissue.

High cholesterol or atherosclerosis. A build-up of plaque may cause increased inflammation in and around the aorta and other blood vessels.

Inflamed arteries. Certain diseases and conditions, such as vasculitis, can cause the body’s blood vessels to become inflamed.

Trauma, such as car accidents.

Smoking. People with a history of smoking make up 75% of abdominal aortic aneurysms.



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