What Is Carotid Artery Stenosis?
At the UPMC Heart and Vascular Institute, we take a team approach to provide comprehensive care for people with carotid artery stenosis. We will work with you and your primary care doctor to create a plan of care that is tailored to you.
Arteries are blood vessels that carry oxygen- and nutrient-rich blood to your body's tissues.
Carotid stenosis is described as a narrowing of one or both of the carotid arteries. These are the two arteries — located on each side of your neck — that deliver oxygen to the front portion of your brain.
When arteries become narrow, less blood flows through them.
If the carotid arteries become too narrowed, or blocked, a transient ischemic attack (mini-stroke) or stroke can result.
Causes of carotid artery stenosis
Atherosclerosis results when plaque — which is made up of cholesterol, fats, calcium, and fibrous tissue — accumulates in arteries.
As one ages, plaque continues to build up along the arterial walls. This plaque may narrow the artery or embolize (break free) to the brain causing a stroke or mini-stroke.
Also, a blood clot can develop in an area where plaque builds up. A part of a clot can break away and become lodged in a smaller artery.
What is atherosclerosis?
Atherosclerosis — also called “hardening of the arteries” — is often the source of carotid artery stenosis.
Carotid artery stenosis risks
You are more likely to develop carotid artery stenosis as you age. To better prevent these chances, you may want to consider scheduling an appointment for a heart disease screening.
- About 1 percent of people will develop a carotid artery stenosis between ages 50 and 59 years.
- About 10 percent of people will have the condition between the ages of 80 and 89.
In addition to age, other risk factors for carotid artery stenosis and atherosclerosis include:
- High cholesterol level (especially elevated LDL or "bad" cholesterol)
- Poorly controlled high blood pressure
- Tobacco use
- Poorly controlled diabetes
- Obesity
- Lack of exercise
- Family history
- Cardiac disease
Carotid artery stenosis complications
If not treated, carotid artery stenosis can lead to a TIA (mini-stroke) or a stroke.
A stroke happens when blood flow is cut off to a portion of the brain. Without blood flow, brain tissue can die within three to four minutes.
Strokes may cause long-term brain damage, disability, and even death.
TIA symptoms and signs may clear within a few minutes to a few hours. People who experience them are at much higher risk of having additional TIAs and a stroke.
That's why it's important to have a doctor closely manage any carotid blockage.
For an appointment with a vascular specialist at the UPMC Heart and Vascular Institute, complete an appointment request form or call 1-855-876-2484 (UPMC HVI).