Although aneurysms can occur in people of different ages and backgrounds, certain groups have an increased risk.
Risk factors vary according to the type of aneurysm.
For abdominal aortic aneurysms, important risk factors include:
-
Older age.
-
A history of smoking.
-
Male sex.
-
High blood pressure.
-
Atherosclerosis.
-
Family history of abdominal aortic aneurysm.
For brain aneurysms, risk factors may include:
-
Family history of brain aneurysms.
-
Smoking.
-
High blood pressure.
-
Certain inherited connective tissue disorders.
-
Certain inherited kidney and vascular conditions.
Some aneurysms occur without any identifiable risk factors.
Therefore, having a healthy lifestyle does not guarantee that an aneurysm will never develop.
At the same time, having one or more risk factors does not mean that a person definitely has an aneurysm.
Risk factors help healthcare professionals decide who may benefit from further assessment or screening.
7. How Are Aneurysms Diagnosed?
Medical imaging is essential for identifying aneurysms.
The appropriate test depends on the location of the suspected aneurysm, the symptoms, and the person's medical history.
Ultrasound
Ultrasound uses sound waves to create images of internal structures.
It is commonly used to detect abdominal aortic aneurysms.
The test is noninvasive, does not use ionizing radiation, and is generally painless.
An abdominal ultrasound can measure the diameter of the aorta and help determine whether an aneurysm is present.
CT Scan
Computed tomography, or CT, uses X-rays to create detailed cross-sectional images.
CT imaging can help identify aneurysms in the chest, abdomen, and brain.
When contrast material is used to visualize blood vessels, the examination may be called CT angiography.
This can provide important information about the aneurysm's size, shape, and relationship to nearby structures.
MRI and MR Angiography
Magnetic resonance imaging uses magnetic fields and radio waves to create detailed images.
MR angiography can help visualize blood vessels and identify certain aneurysms.
It may be particularly useful in selected situations where repeated imaging is needed.
Cerebral Angiography
In certain cases, doctors may recommend catheter-based cerebral angiography.
A thin catheter is guided through a blood vessel, often from the wrist or groin, toward the arteries supplying the brain.
Contrast material is injected to make the blood vessels visible on X-ray images.
This procedure can provide detailed information about complex aneurysms and may help specialists plan treatment.
Not everyone requires every test. Doctors select imaging based on the suspected condition and individual circumstances.
8. Can an Aneurysm Be Detected Before It Ruptures?
Yes. Many aneurysms can be identified before rupture through appropriate imaging.
However, routine screening is not recommended for every person.
Screening decisions depend on age, sex, family history, smoking history, inherited conditions, and the type of aneurysm being considered.
For example, in the United States, the U.S. Preventive Services Task Force recommends a one-time ultrasound screening for abdominal aortic aneurysm in certain men aged 65 to 75 who have ever smoked.
Recommendations differ among countries and may change as new evidence becomes available.
People with a strong family history or inherited vascular conditions may require a different screening approach.
For brain aneurysms, screening is generally considered for selected people with increased risk rather than the entire population.
A healthcare professional can help determine whether screening is appropriate.
9. How Are Aneurysms Treated?
Treatment depends on several factors, including:
-
Location.
-
Size.
-
Shape.
-
Growth rate.
-
Symptoms.
-
Risk of rupture.
-
Age and overall health.
-
Family history and underlying conditions.
Not every aneurysm requires immediate surgery.
Some can be monitored carefully, while others require intervention.
Monitoring and Regular Imaging
Small aneurysms that are considered low risk may be monitored over time.
Doctors may recommend repeated ultrasound, CT, or MRI examinations to check whether the aneurysm is growing.
The interval between scans depends on the aneurysm's characteristics and the person's overall risk.
Monitoring does not mean ignoring the condition. It is an active management strategy designed to identify changes before they become dangerous.
Medication and Risk-Factor Management
Medication cannot reliably eliminate an existing aneurysm, but controlling cardiovascular risk factors is important.
Depending on the person's health, treatment may include:
-
Blood pressure medication.
-
Cholesterol-lowering medication.
-
Smoking cessation support.
-
Diabetes management.
-
Treatment of other cardiovascular conditions.
People should not begin aspirin, blood thinners, or other medications specifically for an aneurysm without medical advice.
The appropriate medication depends on the individual's overall condition.
Endovascular Repair
Endovascular treatment is a minimally invasive approach used for selected aortic aneurysms.
A surgeon inserts a catheter through an artery, commonly in the groin, and guides a stent graft into position.
The graft helps redirect blood flow through the repaired section of the vessel.
This can reduce pressure on the weakened aneurysm wall.
Endovascular repair is not suitable for every aneurysm. The shape, location, and anatomy of the blood vessels influence whether the procedure is appropriate.
Open Surgical Repair
Open surgery involves making an incision to access the affected blood vessel.
The weakened section may be replaced or reinforced with a synthetic graft.
Although open surgery is more invasive than endovascular repair, it may be appropriate for certain patients and aneurysm types.
Brain Aneurysm Treatment
Brain aneurysms may be treated using different procedures.
Surgical clipping: A neurosurgeon places a small metal clip at the base of the aneurysm to prevent blood from entering it.
Endovascular coiling: A catheter is guided through the blood vessels toward the aneurysm. Tiny coils are placed inside the aneurysm to encourage clot formation and reduce blood flow into it.
Other endovascular techniques may be appropriate for selected aneurysms.
The choice depends on the aneurysm's anatomy, location, rupture status, and the patient's overall condition.
10. What Happens If an Aneurysm Ruptures?
A ruptured aneurysm is a life-threatening emergency.
The consequences depend on the location and severity of bleeding.
Ruptured Brain Aneurysm
A brain aneurysm rupture can cause subarachnoid hemorrhage.
Blood enters the space surrounding the brain, increasing pressure and potentially damaging brain tissue.
Possible complications include:
-
Stroke.
-
Seizures.
-
Hydrocephalus.
-
Reduced consciousness.
-
Brain injury.
-
Long-term neurological disability.
-
Death.
Even when a person survives the initial bleeding event, further complications may develop.
One example is vasospasm, a narrowing of blood vessels that can reduce blood supply to parts of the brain.
Another complication is hydrocephalus, in which cerebrospinal fluid accumulates and increases pressure inside the skull.
Rapid diagnosis and specialist treatment are essential.
Ruptured Aortic Aneurysm
A ruptured aortic aneurysm can cause severe internal bleeding.
The person may experience sudden pain, weakness, dizziness, and loss of consciousness.
Blood pressure can fall dramatically, leading to shock.
Emergency surgery or endovascular repair may be required.
The condition can become fatal within a short period without treatment.