Aortic Aneurysm

An aortic aneurysm happens when there is an abnormal bulge or dilation in the wall of the aorta.

The aorta is the largest artery in the body. It carries blood from the heart to the rest of the body.

An aortic aneurysm is a serious, potentially life-threatening condition.

Learn more about aortic aneurysms, including their definition, types, causes, symptoms, diagnosis, treatment, and potential risks and complications.

What is an aortic aneurysm?

An aortic aneurysm occurs when a section of the aorta becomes weakened and balloons outward. The aorta is responsible for carrying oxygen-rich blood from the heart to the rest of the body. An aneurysm can form anywhere along the aorta, but it is most commonly found in the abdominal region (abdominal aortic aneurysm) and the chest area (thoracic aortic aneurysm). If an aneurysm ruptures, it can lead to life-threatening internal bleeding.

Types of aortic aneurysms

Abdominal aortic aneurysm (AAA)

• Location: Occurs in the part of the aorta that passes through the abdomen.
• Prevalence: More common than thoracic aortic aneurysms, particularly in older adults.

Learn more about abdominal aortic aneurysms>>

Thoracic aortic aneurysm (TAA)

• Location: Occurs in the part of the aorta that runs through the chest cavity.
• Prevalence: Less common but often more difficult to diagnose and treat.

Thoracoabdominal aortic aneurysm

• Location: Involves both the thoracic and abdominal segments of the aorta.
• Complexity: These aneurysms are particularly complex and require specialized treatment approaches.

Causes of aortic aneurysms

Atherosclerosis

• Description: The build-up of fatty deposits (plaques) in the arteries, leading to weakened artery walls.
• Risk factors: High blood pressure, high cholesterol, smoking, diabetes, and obesity.

Genetic factors

• Hereditary conditions: Certain genetic conditions, such as Marfan syndrome, Ehlers-Danlos syndrome, and familial thoracic aortic aneurysm, increase the risk of developing aneurysms.

Infections

• Infectious aortitis: Rare infections that can cause inflammation and weakening of the aortic wall, such as syphilis or salmonella.

Trauma

• Injury: Severe trauma to the chest or abdomen can damage the aortic wall and lead to aneurysm formation.

Other risk factors

• Age and gender: The risk of aortic aneurysms increases with age and is more common in men.
• Lifestyle factors: Smoking, poor diet, and lack of exercise contribute to the risk.

Symptoms of aortic aneurysms

Abdominal aortic aneurysm (AAA)

• Common symptoms: Often asymptomatic until it becomes large or ruptures. Possible symptoms include a pulsating feeling near the navel, deep and constant abdominal pain, and back pain.

Thoracic aortic aneurysm (TAA)

• Common symptoms: Often asymptomatic but may cause pain in the chest, back, and jaw, coughing, hoarseness, and shortness of breath as it enlarges.

Complications of ruptured aneurysms

• Severe pain: Sudden, intense abdominal or back pain.
• Shock: Signs of shock, including low blood pressure, rapid pulse, and loss of consciousness, indicating internal bleeding.

Diagnosis of aortic aneurysms

Medical history and physical examination

• Symptom assessment: Detailed inquiry about the presence, duration, and severity of symptoms such as pain and pulsations.
• Physical examination: Palpation of the abdomen for a pulsating mass, listening for abnormal sounds in the aorta using a stethoscope.

Imaging studies

• Ultrasound: Non-invasive imaging to detect and measure the size of an abdominal aortic aneurysm.
• CT scan: Detailed cross-sectional images of the aorta to assess the size and location of the aneurysm.
• MRI: Magnetic resonance imaging for high-resolution images and detailed assessment of the aorta.
• Angiography: Specialized imaging technique using dye and X-rays to visualize blood flow in the aorta and identify aneurysms.

Treatment of aortic aneurysms

Monitoring and medical management

• Surveillance: Regular imaging studies to monitor the size and growth of small, asymptomatic aneurysms.
• Medications: Blood pressure-lowering drugs, cholesterol-lowering medications, and other treatments to reduce the risk of aneurysm growth and rupture.

Surgical treatment

• Open surgical repair: Traditional surgery involving a large incision to directly access and repair the aneurysm with a synthetic graft.
• Endovascular aneurysm repair (EVAR): Minimally invasive technique using catheters to place a stent graft inside the aorta, reinforcing the weakened area and preventing rupture.

Lifestyle modifications

• Smoking cessation: Quitting smoking to reduce the risk of aneurysm growth and complications.
• Healthy diet and exercise: Adopting a heart-healthy diet and regular exercise routine to manage blood pressure and cholesterol levels.

Potential risks and complications

Complications of untreated aneurysms

• Rupture: Life-threatening internal bleeding if the aneurysm bursts.
• Dissection: Tearing of the aortic wall, leading to severe pain and compromised blood flow to vital organs.

Learn more about aortic dissection>>

Surgical risks

• Infection: Risk of infection at the surgical site.
• Bleeding: Risk of excessive bleeding during and after surgery.
• Organ injury: Potential damage to surrounding organs during surgery.

Long-term complications

• Graft complications: Risk of leak or blockage in the synthetic graft used for aneurysm repair.
• Recurrence: Risk of developing new aneurysms or complications in other areas of the aorta.

An aortic aneurysm is a serious condition that requires timely diagnosis and appropriate management to prevent life-threatening complications. Understanding the types, causes, symptoms, diagnostic methods, and treatment options is essential for effective care. If you or a loved one are at risk for or have been diagnosed with an aortic aneurysm, consulting with a specialized medical team will help develop a personalized care plan tailored to your specific needs and circumstances.