Health Library Logo

Health Library

Aortic Dissection

Overview

Aortic dissection is a dangerous problem. It happens when a tear forms in the aorta, the main artery carrying blood through your body. This tear allows blood to squirt between the layers of the aorta's walls. Think of it like a balloon with a hole – the air (blood) rushes out, and the balloon (aorta) splits apart. If the blood leaks through the outside of the aorta, it can be life-threatening.

Symptoms

Aortic dissection can have symptoms similar to other serious heart conditions, like a heart attack. Recognizing these signs is crucial for quick treatment. Here are some common symptoms:

  • Sudden, intense chest or upper back pain: This pain is often described as a tearing or ripping feeling, and it might travel to your neck or down your back. The pain is usually very severe.
  • Sudden, intense stomach pain: Abdominal pain can also be a symptom of aortic dissection. This pain is often just as severe as the chest pain.
  • Loss of consciousness: Passing out can be a sign of serious problems, including aortic dissection.
  • Shortness of breath: Difficulty breathing is another possible symptom. This could be related to the heart's struggle to pump blood effectively.
  • Stroke-like symptoms: Aortic dissection can mimic a stroke. These symptoms include sudden vision changes, trouble speaking, and weakness or paralysis on one side of the body.
  • Uneven pulse: Comparing your pulse in both arms or legs can reveal a difference. A weaker pulse in one area compared to the other could indicate a problem with blood flow.
  • Leg pain: Pain in one leg, especially if it's sudden and severe, could be a symptom.
  • Difficulty walking: If you have sudden trouble walking, it's important to seek immediate medical attention. This could be related to the blood flow issues caused by the dissection.

Important Note: If you experience any of these symptoms, seek immediate medical help. Early diagnosis and treatment are critical for aortic dissection. These symptoms can also be related to other medical issues, so it's essential to get a proper diagnosis from a doctor.

When to see a doctor

If you have a sudden, severe chest pain, feel like you're about to faint, have trouble breathing very quickly, or experience stroke-like symptoms, call 911 or your local emergency number right away. These symptoms might not always mean a serious medical issue, but it's important to get checked by a doctor as soon as possible. Getting medical attention early can make a big difference in your health and even save your life. Prompt diagnosis and treatment are key.

Causes

A tear in the aorta, a major blood vessel, is called an aortic dissection. This tear happens when a weak spot in the aorta's lining allows blood to get between the layers of the vessel wall.

Doctors categorize aortic dissections into two main types based on where the tear occurs:

  • Type A: This is the more common and serious type. The tear usually starts in the part of the aorta right where it comes out of the heart (the ascending aorta). Importantly, the tear can extend up into the upper part of the aorta and/or down into the lower part of the aorta, and even into the abdomen.

  • Type B: In this type, the tear happens only in the lower part of the aorta (the descending aorta). Again, the tear might extend down into the abdomen.

Risk factors

Several factors can increase your chances of getting an aortic dissection, a serious tear in the aorta, the main blood vessel in your body.

High Blood Pressure and Artery Problems:

  • High blood pressure (hypertension): If your blood pressure is consistently too high, it puts extra stress on your arteries, making them more prone to damage. Uncontrolled high blood pressure is a significant risk factor.
  • Hardening of the arteries (atherosclerosis): This condition, where plaque builds up inside your arteries, weakens them and makes them more likely to tear.
  • Weakened and bulging artery (aortic aneurysm): An aneurysm is like a balloon-like bulge in the aorta. If the aorta is weakened, it's more likely to tear.
  • Aortic valve problems (bicuspid aortic valve): Some people are born with a heart valve called the aortic valve that has only two flaps (bicuspid) instead of three. This can make the aorta more vulnerable to damage.
  • Narrowing of the aorta (aortic coarctation): This is a birth defect where the aorta is narrower than usual. This can increase the pressure in the aorta and make it more likely to tear.

Genetic Factors:

Some inherited conditions can make you more susceptible to aortic dissection:

  • Turner syndrome: This genetic condition can lead to high blood pressure, heart problems, and other health issues that can increase the risk of aortic dissection.
  • Marfan syndrome: This condition affects connective tissue, which supports your body's structures. People with Marfan syndrome often have a family history of weakened blood vessels, including aortic aneurysms and aortic dissections.
  • Other connective tissue disorders: Conditions like Ehlers-Danlos syndrome (EDS) affect connective tissue, making joints loose and blood vessels fragile, increasing the risk of tears. Loeys-Dietz syndrome causes twisted arteries, particularly in the neck, which can be a risk factor for aortic dissection.

Other Risk Factors:

  • Inflammation of the arteries (giant cell arteritis): This inflammatory condition can damage the arteries, increasing the risk of aortic dissection.
  • Age and Sex: Aortic dissection is more common in men and in people age 60 and older.
  • Drug use (cocaine): Cocaine temporarily raises blood pressure, which can put added stress on the aorta and increase the risk of dissection.
  • Pregnancy: In rare cases, aortic dissection can occur in otherwise healthy women during pregnancy. This is usually due to the increased stress on the circulatory system during pregnancy.
  • Strenuous exercise (weightlifting): High-intensity weightlifting and other strenuous resistance training can temporarily elevate blood pressure, potentially increasing the risk of aortic dissection in susceptible individuals.

If you have any concerns about your risk of aortic dissection, talk to your doctor. They can evaluate your individual circumstances and discuss preventative measures.

Complications

Aortic dissection can lead to serious problems. One of the most concerning is internal bleeding, which can be life-threatening. This severe bleeding can happen quickly and be extremely dangerous.

Beyond internal bleeding, aortic dissection can damage vital organs. For example, it can harm the kidneys, leading to kidney failure. It can also cause severe damage to the intestines, potentially putting a person's life at risk.

Another potential complication is a stroke. This happens when blood flow to the brain is cut off. A stroke can cause lasting disabilities.

The aorta, a major blood vessel, can also be directly affected. Aortic dissection can damage the aortic valve, causing a condition called aortic regurgitation. This means the valve doesn't close properly, leading to problems with blood flow. In some cases, the dissection can even tear into the sac surrounding the heart (pericardium), leading to a buildup of blood around the heart called cardiac tamponade. This pressure buildup can also be life-threatening.

Prevention

Aortic dissection is a serious condition, but you can lower your chances of getting it. The key is taking care of your overall health and avoiding injuries.

Heart Health is Key:

  • Manage your blood pressure: High blood pressure puts extra strain on your heart and arteries. If you have high blood pressure, get a home blood pressure monitor. This allows you to track your readings and make sure your blood pressure stays within a healthy range. Talk to your doctor about what a healthy range is for you.

  • Quit smoking: Smoking damages your blood vessels and increases your risk of many health problems, including aortic dissection. If you smoke, seek help to quit. There are many resources available to help you quit smoking.

  • Achieve and maintain a healthy weight: Carrying extra weight puts extra stress on your heart. Focus on a diet that's low in salt and high in fruits, vegetables, and whole grains. Combine this with regular exercise. Your doctor can help you create a personalized plan to achieve and maintain a healthy weight.

  • Buckle Up: Wearing your seatbelt properly during car rides can help prevent chest injuries, which are a major risk factor for aortic dissection.

Talk to Your Doctor:

  • Family history matters: If you have a family history of aortic dissection, a connective tissue disorder (like Marfan syndrome), or a bicuspid aortic valve, it's crucial to tell your doctor. These conditions increase your risk. They can discuss your risk and recommend appropriate monitoring or treatment.

  • Aneurysm care: If you have an aortic aneurysm (a bulge in the aorta), your doctor will tell you how often you need checkups and whether surgery to repair it is necessary.

  • Genetic predisposition: If you have a genetic condition that increases your risk of aortic dissection, your doctor might recommend medications, even if your blood pressure is normal. They can assess your specific situation and develop the best plan for you.

By following these steps, you can significantly reduce your risk of aortic dissection and improve your overall heart health. Remember to always discuss your specific health needs with your doctor.

Diagnosis

Recognizing an aortic dissection can be tricky because its symptoms often mimic other health problems. A doctor might suspect an aortic dissection if you experience:

  • Sudden, intense chest pain, like a tearing or ripping sensation.
  • A difference in blood pressure readings between your right and left arms.
  • A widening of the main artery (aorta) shown on a chest X-ray.

Doctors use several tests to confirm an aortic dissection:

  • Transesophageal Echocardiogram (TEE): This test uses sound waves to create detailed moving images of your heart. A special ultrasound probe is guided down your esophagus, getting very close to your heart. This gives a much clearer view of your heart and the aorta than a regular echocardiogram, allowing doctors to see potential problems more easily.

  • Computed Tomography (CT) Scan of the Chest: A CT scan uses X-rays to create cross-sectional images of your body. These detailed images can help confirm whether you have an aortic dissection. The scan shows the structure of the aorta very clearly.

  • Magnetic Resonance Angiography (MRA): An MRA uses a powerful magnet and radio waves to create detailed images of your blood vessels, including the aorta. This test provides a detailed picture of the aorta and its branches, helping doctors identify any abnormalities. It's a very precise method for examining the blood vessels.

Treatment

An aortic dissection is a serious, life-threatening condition that needs immediate medical attention. Doctors will decide on the best treatment, either surgery or medicine, based on where the tear is in the aorta.

Treatment for Type A Aortic Dissection:

A Type A dissection is often treated with surgery. Surgeons carefully remove as much of the damaged part of the aorta as possible. This is often done by putting in a new, strong tube (a graft) to replace the damaged part of the aorta. If the aortic valve is also damaged, it might need to be replaced at the same time. The new valve is placed inside the graft. Medications are used to slow the heart rate and lower blood pressure to prevent the tear from getting worse. These medications can also help control blood pressure before surgery.

Treatment for Type B Aortic Dissection:

In a Type B dissection, medicine is often the first course of treatment. The same medications used to treat Type A dissections are used. These medications help lower blood pressure and slow the heart rate to prevent the tear from getting worse. In some cases, surgery is needed. If surgery is required, it's similar to the surgery done for Type A dissections. Sometimes, small wire mesh tubes called stents may be used to support a damaged section of the aorta.

Post-Treatment Care:

After either type of treatment, you will likely need medication to keep your blood pressure under control for the rest of your life. Regular checkups with imaging tests, like CT scans or MRIs, are important to monitor your condition and make sure the repair is holding up well.

Address: 506/507, 1st Main Rd, Murugeshpalya, K R Garden, Bengaluru, Karnataka 560075

Disclaimer: August is a health information platform and its responses don't constitute medical advise. Always consult with a licenced medical professional near you before making any changes.

Made in India, for the world