Can Brachiocephalic Artery Stenosis Increase Stroke Risk?

You notice that your arm feels unusually tired while doing normal activities. A few days later, you experience a brief episode of dizziness and blurred vision that disappears within minutes. It is easy to dismiss symptoms like these as fatigue or getting older. In some cases, however, they may point to reduced blood flow through the brachiocephalic artery, one of the largest arteries supplying blood to the brain and right arm. When this artery becomes narrowed, the risk of transient ischemic attacks (TIAs) and stroke can increase.

According to the American Stroke Association, nearly one in five strokes is preceded by a TIA, making early evaluation of temporary neurological symptoms especially important. While brachiocephalic artery stenosis is much less common than carotid artery disease, it deserves careful attention because it can reduce circulation to critical areas of the brain. 

Continue reading to learn how this condition develops, and when a minimally invasive treatment from the best vascular specialist for brachiocephalic artery stenting in Thousand Oaks can resolve symptoms and actually lower your stroke risk.  

What Does the Brachiocephalic Artery Do?

The brachiocephalic artery is the first major branch of the aortic arch. It divides into the right common carotid artery, which supplies the right side of the brain, and the right subclavian artery, which supplies the right arm. Because it delivers blood to both regions, narrowing can affect more than one part of the body at the same time.

Narrowing of the Brachiocephalic Artery

Most narrowing develops because of atherosclerosis, a condition in which cholesterol, calcium, and inflammatory cells build up inside the artery wall. Over time, these plaques reduce blood flow and may become unstable. If a clot forms or plaque breaks loose, blood flow to the brain can be interrupted, leading to a TIA or stroke.

You may think that arterial narrowing must be severe before it causes symptoms. However, even moderate narrowing may become significant if blood flow cannot keep up with the brain's demands or if small pieces of plaque travel downstream.

What Symptoms Can a Narrowed Brachiocephalic Artery Cause?

Symptoms vary depending on how much blood flow is reduced and whether the brain or arm is affected. Some people have no symptoms until the condition is discovered during imaging. Others experience more serious warning signs. Common symptoms of this medical condition include:

• Dizziness or lightheadedness
• Temporary vision changes
• Arm weakness or fatigue, especially during activity
• Numbness or weakness affecting one side of the body
• Difficulty speaking
• Episodes consistent with a transient ischemic attack (TIA)

Symptoms that last only a few minutes can still be serious. A TIA is often called a mini stroke because it signals a higher risk of a future stroke if the underlying cause is not treated.

How Is Brachiocephalic Artery Disease Diagnosed?

Diagnosis usually begins with listening carefully to your symptoms and understanding your medical history. The best interventional neurologist in Thousand Oaks will also consider any risk factors such as smoking, diabetes, high blood pressure, elevated cholesterol, and previous cardiovascular disease.

Imaging is also essential for diagnosis because symptoms alone cannot determine whether the brachiocephalic artery is responsible. Depending on the situation, testing may include:

• CT angiography (CTA)
• MR angiography (MRA)
• Duplex ultrasound
• Catheter angiography when detailed vascular imaging is needed

An experienced endovascular surgeon in Thousand Oaks will use these imaging studies to evaluate plaque characteristics, blood flow patterns, collateral circulation, and whether symptoms match the imaging findings. This clinical evaluation helps avoid unnecessary procedures while identifying patients who would benefit from treatment.

When Is Brachiocephalic Artery Stenting the Right Treatment?

Some people can be successfully treated with medications that reduce stroke risk, along with aggressive management of blood pressure, cholesterol, diabetes, and smoking cessation. With that said, the decision to recommend stenting depends on the severity of narrowing, symptoms, and overall stroke risk.

Brachiocephalic artery stenting is a minimally invasive procedure performed through a small catheter. A balloon opens the narrowed artery, and a stent helps keep it open to improve blood flow to the brain and arm.

When Should You See a Vascular Specialist for Brachiocephalic Artery Disease?

You should always seek medical attention if you have unexplained dizziness, recurrent TIAs, temporary vision loss, arm weakness during activity, or other symptoms suggesting reduced blood flow to the brain. These symptoms become even more concerning if you have risk factors for vascular disease. Some symptoms require emergency care rather than a routine appointment. Call 911 immediately if you develop:

• Sudden weakness on one side
• Difficulty speaking
• Sudden vision loss
• Severe dizziness with inability to walk
• Facial drooping
• Sudden confusion

Where To Find the Best Vascular Specialist for Brachiocephalic Artery Stenting in Thousand Oaks

A narrowed brachiocephalic artery can quietly reduce blood flow to the brain long before a stroke occurs. Our network of endovascular specialists at the Vascular and Neuroscience Institute specializes in diagnosing complex cerebrovascular conditions and determining when minimally invasive procedures such as brachiocephalic artery stenting are appropriate. 

Our team combines advanced vascular imaging with the expertise of an interventional neurologist in Thousand Oaks to develop treatment plans focused on protecting brain health while avoiding unnecessary procedures. 

Ready to get a personalized treatment plan from the best vascular specialist for brachiocephalic artery stenting in Thousand Oaks?