Aortic Dissection: Sudden Chest or Back Pain and Emergency Care

Aortic dissection is a serious emergency in which blood enters the wall of the aorta, the body’s main artery. Sudden severe chest, back, or abdominal pain should be treated urgently, because rapid diagnosis and specialist care can protect the heart, brain, kidneys, and other organs.

Overview

Aortic dissection is a medical emergency involving the aorta, the large artery that carries oxygen-rich blood from the heart to the rest of the body. In a dissection, a tear develops in the inner lining of the aorta. Blood then flows into the wall of the artery and separates its layers, creating a false channel where blood should not normally travel.

This separation can reduce blood flow to vital organs, weaken the aortic wall, or lead to life-threatening bleeding if the aorta ruptures. Although aortic dissection is not common, it is one of the most important causes of sudden severe chest or back pain that doctors must consider quickly.

Aortic dissections are often described by location. Type A dissections involve the ascending aorta, the first part of the aorta as it leaves the heart, and usually require emergency surgery. Type B dissections involve the descending aorta, farther down in the chest or abdomen, and may be treated with intensive medical therapy, endovascular repair, surgery, or a combination depending on the patient’s condition.

Symptoms of Aortic Dissection

The most typical symptom is sudden, severe pain in the chest, upper back, or between the shoulder blades. Many people describe the pain as sharp, tearing, ripping, or unlike any previous pain. The pain may move from the chest to the back, abdomen, neck, jaw, or legs as the dissection extends along the aorta.

Symptoms vary because the aorta supplies blood to many parts of the body. A person may have shortness of breath, sweating, nausea, fainting, weakness, confusion, or a feeling of impending collapse. If blood flow to the brain is affected, symptoms can resemble a stroke, such as trouble speaking, facial drooping, vision changes, or weakness on one side of the body.

Other possible signs include a weak or absent pulse in one arm or leg, a major difference in blood pressure between arms, sudden abdominal pain, leg pain, or signs of shock. Some people, especially older adults or those with other medical conditions, may have less typical symptoms. Because the symptoms can overlap with heart attack, pulmonary embolism, or other emergencies, urgent medical evaluation is essential.

Causes and Risk Factors

Aortic dissection usually develops when the aortic wall has become weakened over time. Long-standing high blood pressure is one of the most important risk factors because it places constant stress on the artery wall. Atherosclerosis, smoking, and increasing age can also contribute to reduced strength and flexibility of the aorta.

Some people have a higher risk because of conditions that affect connective tissue or the structure of the aorta. These may include Marfan syndrome, Loeys-Dietz syndrome, vascular Ehlers-Danlos syndrome, bicuspid aortic valve, coarctation of the aorta, and a family history of aortic aneurysm or dissection. Aortic aneurysm, which is an abnormal widening of the aorta, can also increase the chance of dissection.

Less common triggers include major chest trauma, certain inflammatory diseases affecting blood vessels, complications of heart or aortic procedures, and pregnancy or the period shortly after childbirth in people with underlying aortic risk factors. Not everyone with aortic dissection has a known risk factor, which is why sudden severe symptoms should always be taken seriously.

• Major risk factors include uncontrolled high blood pressure, known aortic aneurysm, inherited connective tissue disorders, bicuspid aortic valve, prior aortic surgery, and close family history of aortic disease.
• Healthy blood pressure management and regular follow-up are especially important for people already known to have aortic enlargement.

Diagnosis in the Emergency Setting

Doctors diagnose aortic dissection by combining symptoms, physical examination, medical history, and urgent imaging. In the emergency department, the care team may check blood pressure in both arms, assess pulses, listen for heart murmurs, and look for signs of reduced blood flow to the brain, heart, kidneys, intestines, or limbs.

CT angiography is commonly the first imaging test because it is fast, widely available in hospitals, and can show the location and extent of the dissection. It can also help doctors see whether major branches of the aorta are involved. In some situations, transesophageal echocardiography, an ultrasound performed through the esophagus, is used to evaluate the heart and ascending aorta, especially if the patient is unstable or cannot be moved easily.

MRI angiography can provide detailed images of the aorta but is less often used as the first test in a time-critical emergency. Blood tests, electrocardiogram, and chest X-ray may also be performed, but they cannot reliably rule out aortic dissection on their own. The goal is to confirm the diagnosis quickly while also considering other urgent causes of chest pain.

Treatment Options

Treatment begins immediately with close monitoring, pain control, and medications to reduce the force of blood flow against the aortic wall. Doctors usually aim to lower blood pressure and heart rate carefully, using intravenous medicines in a monitored setting. The exact targets and medications depend on the patient’s condition and are decided by the treating team.

Type A aortic dissection, involving the ascending aorta, is usually treated with emergency surgery. The surgeon removes the damaged section of the aorta and replaces it with a synthetic graft. If the aortic valve is affected, valve repair or replacement may also be needed. Surgery is complex, but it is often the safest way to prevent rupture, heart complications, or loss of blood flow to vital organs.

Type B aortic dissection, involving the descending aorta, may be treated first with intensive medical therapy if there are no complications. If there is ongoing pain, uncontrolled blood pressure, poor blood flow to organs, rapid enlargement, rupture risk, or other complications, endovascular repair may be recommended. Endovascular repair usually involves placing a stent graft inside the aorta through blood vessels in the groin to redirect blood flow and support the weakened area.

Some patients need open surgery, hybrid procedures, or staged treatment depending on anatomy and organ involvement. Care is typically provided by a multidisciplinary team that may include emergency physicians, cardiologists, cardiovascular surgeons, vascular surgeons, anesthesiologists, radiologists, and intensive care specialists.

Recovery and Long-Term Follow-Up

Recovery depends on the type of dissection, the treatment performed, the patient’s overall health, and whether any organs were affected before treatment. After surgery or intensive medical therapy, patients are closely monitored in hospital. The care team follows blood pressure, kidney function, neurological status, pain, and imaging findings.

Long-term care is essential because the aorta may remain vulnerable even after the immediate emergency has been treated. Many people need lifelong blood pressure management, regular imaging of the aorta, and follow-up with a cardiologist, cardiovascular surgeon, or vascular specialist. Imaging may include CT, MRI, or echocardiography, depending on the area of the aorta being monitored.

Patients are usually advised to take medications exactly as prescribed and to avoid stopping blood pressure medicines without medical guidance. Activity recommendations are individualized. In general, heavy straining and sudden intense exertion may be limited, while gradual, doctor-approved physical activity may support recovery and cardiovascular health.

Prevention and Self-Care for People at Risk

Not every aortic dissection can be prevented, but risk can often be reduced. The most important step for many people is controlling high blood pressure. This may involve medication, home blood pressure monitoring, reducing salt intake when advised, maintaining a healthy weight, limiting alcohol, not smoking, and treating sleep apnea or other contributing conditions.

People with a known aortic aneurysm, bicuspid aortic valve, connective tissue disorder, or family history of aortic dissection should follow a specialist monitoring plan. Regular imaging helps doctors track aortic size and decide whether preventive surgery or endovascular treatment should be considered before an emergency occurs. Family members may also be advised to have screening if an inherited condition is suspected.

Self-care also includes knowing personal warning signs and carrying relevant medical information, especially for those with diagnosed aortic disease. Patients should ask their doctor what level of exercise is safe, which activities to avoid, and how often imaging is needed. Decisions should be individualized rather than based on general advice alone.

When to Seek Emergency Care

Possible aortic dissection symptoms should be treated as an emergency. A person should call local emergency services immediately if they develop sudden severe chest, back, or abdominal pain, especially if it is sharp, tearing, or associated with fainting, shortness of breath, weakness, stroke-like symptoms, or a feeling of collapse. It is safest not to drive to hospital, because symptoms can worsen quickly and emergency teams can begin assessment and stabilization during transport.

People with known aortic aneurysm, previous aortic surgery, Marfan syndrome or another connective tissue condition, bicuspid aortic valve, or a strong family history of aortic disease should be especially cautious about sudden new pain. However, anyone can develop serious chest or back pain, and only a medical evaluation can determine the cause.

For international patients who need evaluation or treatment for aortic disease, Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals can provide diagnostic imaging, cardiovascular surgery, endovascular treatment, and follow-up planning. In any suspected acute dissection, the priority is always immediate emergency care at the nearest appropriate hospital.

Frequently asked questions

What does aortic dissection pain feel like?

Aortic dissection pain is often sudden and severe. Many people describe it as sharp, tearing, ripping, or moving from the chest to the back or abdomen. Because symptoms can resemble a heart attack or other emergencies, urgent medical assessment is needed.

Is aortic dissection the same as an aortic aneurysm?

No. An aortic aneurysm is a widening or bulging of the aorta, while aortic dissection is a tear in the inner lining of the aorta that allows blood to split the wall. However, an aneurysm can increase the risk of dissection, and both conditions require specialist monitoring.

Can aortic dissection be treated without surgery?

Some type B dissections, which involve the descending aorta, may be managed initially with intensive blood pressure control and close monitoring. Surgery or endovascular repair may be needed if complications develop or if the anatomy is high risk. Type A dissections usually require emergency surgery.

How is aortic dissection diagnosed quickly?

CT angiography is commonly used because it can rapidly show the aorta and its branches. Doctors may also use transesophageal echocardiography or MRI in selected situations. Blood tests and ECGs can help evaluate other causes of chest pain but cannot reliably exclude dissection by themselves.

Who is at higher risk of aortic dissection?

Risk is higher in people with long-standing high blood pressure, a known aortic aneurysm, bicuspid aortic valve, prior aortic surgery, or inherited connective tissue conditions such as Marfan syndrome. A close family history of aortic aneurysm or dissection can also increase risk. People with these factors should discuss screening and follow-up with a specialist.

What should someone do if they suspect aortic dissection?

They should call emergency services immediately and avoid driving themselves to hospital. They should not delay care to see if the pain passes. Emergency clinicians can begin monitoring and arrange urgent imaging to confirm or rule out the diagnosis.

References

• American Heart Association
• European Society of Cardiology
• Society for Vascular Surgery
• Mayo Clinic
• National Heart, Lung, and Blood Institute

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.