Aortic Dissection: Symptoms, Causes and Urgent Treatment
An aortic dissection is a tear inside the wall of the aorta. The aorta is the main artery that carries blood from the heart to the body.
When the inner layer tears, blood pushes between the layers of the wall. This creates a false channel. The tear can spread quickly. It can block blood flow to vital organs.
Aortic dissection is a medical emergency.
What Happens During an Aortic Dissection?
The aorta has several layers. In a dissection, the inner lining splits.
Blood enters the tear and separates the wall layers. This weakens the artery.
If the outer wall breaks, massive bleeding occurs. This can lead to sudden cardiac death.
Blood flow to the brain, kidneys, or limbs may also be blocked. This increases ischemic stroke risk and may cause a transient ischemic attack also called TIA.
If the heart cannot pump enough blood, cardiogenic shock may develop.
Main Causes of Aortic Dissection
The most common cause is severe high blood pressure. A hypertension crisis can place extreme stress on the aortic wall.
Long term pressure leads to arterial stiffness and wall damage.
Other causes include:
- Aortic aneurysm progression
- Bicuspid aortic valve also called BAV
- Coarctation of the aorta
- Other structural heart defects
- Trauma
- Connective tissue disorders
Aging also plays a role. Vascular aging and arterial calcification weaken the vessel over time.
Inflammation is another factor. High inflammation biomarkers may signal increased risk.
Elevated homocysteine and arterial health problems are also linked to artery damage.
How Plaque and Artery Disease Contribute
Atherosclerosis increases risk.
Plaque rupture can weaken the wall. Patients with peripheral artery disease also called PAD often have widespread artery damage.
Dissection may also reduce blood flow to the heart. This can trigger coronary thrombosis or heart attack.
Symptoms of Aortic Dissection
Symptoms are sudden and severe.
Common signs include:
- Sharp chest pain
- Severe back pain
- Tearing sensation in the chest
- Shortness of breath
- Weak pulse in one arm
- Fainting
Some patients show signs similar to stroke if brain blood flow drops.
Pain is usually abrupt. It often reaches maximum intensity within seconds.
How It Is Diagnosed
Doctors act quickly.
An electrocardiogram also called ECG or EKG may be done first to rule out heart attack.
Imaging tests confirm the diagnosis. CT scan is most common.
In some cases, cardiac catheterization may be used if heart arteries are involved.
Early diagnosis saves lives.
Emergency Treatment
Treatment depends on where the tear is located.
Dissections in the upper aorta usually require emergency surgery.
Dissections in the lower aorta may be treated with strong blood pressure control.
The goal is to reduce force on the aortic wall.
Without fast treatment, the risk of death is high.
Possible Complications
Aortic dissection can lead to:
- Stroke
- Heart attack
- Organ failure
- Sudden cardiac death
- Cardiogenic shock
Survival depends on speed of treatment.
Final Thoughts
Aortic dissection is sudden and dangerous.
Control blood pressure. Monitor aneurysms. Manage artery health. Reduce inflammation.
If chest or back pain feels sharp and severe, seek emergency care immediately.
Fast action can save your life.