Carotid Artery Disease
What Is Carotid Artery Disease?
Carotid artery disease is characterized by the narrowing or blockage of the carotid arteries, the major blood vessels that supply blood to the brain. This narrowing is typically caused by atherosclerosis, a process in which fatty deposits, or plaque, accumulate on the inner walls of the arteries. Over time, this buildup can restrict blood flow to the brain, potentially leading to serious complications such as stroke. The disease often progresses without noticeable symptoms, making it a significant risk factor for stroke that may require proactive management and treatment strategies to mitigate its progression and prevent adverse outcomes.
What Type of Doctor Treats Carotid Artery Disease?
Carotid artery disease treatment involves a multidisciplinary team of medical professionals. The primary doctors treating this condition may include neurologists and vascular surgeons. Among these, vascular surgeons are known for their comprehensive knowledge of the entire range of vascular diseases and treatment options, offering patients an unbiased approach to treatment.
How Is Carotid Artery Disease Diagnosed?
Carotid artery disease is diagnosed through a series of tests that assess the blood flow in these crucial vessels. The carotid arteries on each side of your neck are responsible for supplying your brain with oxygen-rich blood.
The diagnostic process begins with a physical exam. Your healthcare provider may listen to your carotid arteries using a stethoscope during this exam. An unusual sound, known as a bruit, could indicate carotid artery disease.
Imaging tests are typically used to confirm the diagnosis. These tests provide a detailed view of your carotid arteries and can reveal any narrowing or blockages. One common test is a carotid ultrasound, which uses sound waves to create images of your arteries. Other tests include computed tomography angiography (CTA) and magnetic resonance angiography (MRA), which provide detailed images of the blood vessels in your neck and brain.
Here is an outline of the diagnostic process:
- Physical exam - The healthcare provider conducts a physical exam, which may include listening to the carotid arteries with a stethoscope. An unusual sound, known as a bruit, could indicate carotid artery disease.
- Carotid ultrasound - This imaging test uses sound waves to create images of the carotid arteries. It can reveal any narrowing or blockages.
- Computed tomography angiography (CTA) - This imaging test provides detailed images of the blood vessels in your neck and brain.
- Magnetic resonance angiography (MRA) - Similar to CTA, MRA also provides detailed images of the blood vessels in your neck and brain.
Early diagnosis of carotid artery disease is crucial as it allows for timely treatment and reduces the risk of severe complications, such as stroke.
What Causes Carotid Artery Disease?
The primary cause of carotid artery disease is atherosclerosis, which involves plaque buildup within the artery walls. Atherosclerosis begins when damage occurs to the inner layers of the arteries. This damage can be caused by several factors, including:
- Smoking - Smoking can damage and weaken arteries, making them more susceptible to atherosclerosis.
- High blood pressure - Over time, high blood pressure can damage arteries, leading to atherosclerosis.
- High cholesterol - Excessive cholesterol in the blood can lead to plaque formation.
- Diabetes - High blood sugar levels can contribute to artery damage.
Over time, this plaque - a sticky substance composed of fat, cholesterol, calcium and other substances found in the blood - hardens and narrows the arteries, a condition known as stenosis. This can reduce or block blood flow to the brain, potentially leading to a stroke.
Is Carotid Artery Disease Curable?
While carotid artery disease is a serious condition that can lead to a stroke, it is treatable. Treatment aims to reduce the risk of stroke by controlling or removing plaque buildup and by preventing blood clots. This can involve lifestyle changes, medication and, in some cases, surgery.
The treatment approach depends on the severity of the disease:
- Early Stage: In the early stages, treatment typically focuses on observation and managing risk factors such as high blood pressure, high cholesterol, diabetes, obesity, physical inactivity and smoking. However, if the patient experiences a transient ischemic attack (TIA), which is a temporary shortage of blood flow to the brain, a more aggressive treatment approach may be necessary.
- Mild to Moderate Blockages: For patients with mild to moderate blockages, lifestyle modifications are typically the first line of treatment. These include:
- Healthy diet: Choose foods low in saturated fats, trans fat and cholesterol and high in fiber.
- Regular physical activity: Physical activity can help you maintain a healthy weight and lower your cholesterol and blood pressure levels.
- Maintain a healthy weight: Obesity increases your risk for stroke.
- Quit smoking: Cigarette smoking dramatically increases your chances of having a stroke.
- Limit alcohol: Avoid drinking too much alcohol, which can raise your blood pressure.
- Control medical conditions: If you have certain heart conditions, such as coronary artery disease or atrial fibrillation, your healthcare team may recommend medical treatment or surgery.
- Medicine: Taking blood-thinning medicine, like aspirin and cholesterol-lowering agents, such as statins, may be an option to prevent blood clots and reduce the risk of stroke.
- Severe Blockages: For patients with severe blockages, more invasive procedures may be necessary:
- Carotid Endarterectomy: This surgical procedure involves making an incision in the neck and opening the carotid artery to remove the plaque.
- Carotid Angioplasty and Stenting: In this less invasive procedure, a balloon catheter is guided to the area of the blockage or narrowing. When the balloon is inflated, the fatty plaque or blockage is compressed against the artery walls to improve blood flow. During the angioplasty procedure, a carotid stent (a small, metal mesh tube) is placed inside the carotid artery at the site of the blockage and provides support to keep the artery open.
Find a Vascular Surgeon in San Antonio, TX
The vascular surgeons, podiatrists and other providers at the Vascular Institute of San Antonio are experienced in treating vascular conditions, including carotid artery disease.
If you've been diagnosed with carotid artery disease, know that effective treatments are available, and the team of professionals at the Vascular Institute of San Antonio is here to help.