Carotid Artery Stenosis Treatment in Thailand

What is a Carotid Artery Stenosis?

Carotid Artery Stenosis occurs when plaque builds up inside the carotid arteries and narrows the blood flow to the brain. The plaque is commonly made up of cholesterol, fatty substances, calcium, and other materials. Mild narrowing may cause no symptoms, while more significant disease can increase the risk of TIA or ischemic stroke.

What is the Importance of Timely Treatment?

Timely diagnosis is important because carotid artery stenosis may remain unnoticed until a TIA or stroke occurs. Evaluation helps determine the degree of narrowing, whether symptoms relate to the affected artery, and the best treatment. Managing the condition can reduce the risk of future stroke and address cardiovascular risk factors.

What are the Common Symptoms of a Carotid Artery Stenosis?

• Sudden Weakness or Numbness: Weakness or numbness, particularly on one side of the face or body, may occur during a TIA or stroke.
• Speech Difficulties: Sudden difficulty speaking, finding words, or understanding speech may indicate impaired blood flow to the brain areas responsible for language.
• Vision Changes: Temporary or persistent vision loss in one eye can occur when blood flow to the eye is affected.
• Dizziness or Loss of Balance: Sudden dizziness, difficulty walking, or loss of coordination may occur during a neurological event.
• Sudden Balance or Coordination Problems: Sudden difficulty walking, loss of coordination, or dizziness may indicate a neurological emergency, particularly when accompanied by other stroke symptoms.
• Other Sudden Neurological Symptoms: Sudden confusion, severe headache, or new neurological changes require urgent medical assessment. These symptoms can have several causes and should not automatically be attributed to carotid artery stenosis.

Causes and Risk Factors of Carotid Artery Stenosis

Causes

• Atherosclerosis: Plaque buildup inside the carotid artery is the most common cause.
• High Cholesterol: Excess cholesterol can contribute to plaque formation and progression.
• Arterial Inflammation: Certain inflammatory conditions can affect the blood-vessel wall.
• Carotid Artery Dissection: A tear in the artery wall can narrow the vessel and may occur for different reasons.
• Radiation or Previous Neck Treatment: Previous radiation therapy to the neck can contribute to vascular disease in some individuals.
• Rare Vascular Disorders: Fibromuscular dysplasia and other less common vascular conditions may affect carotid arteries.

Risk Factors

• Older Age: The risk of atherosclerotic carotid disease generally increases with age.
• High Blood Pressure: Persistent hypertension can damage arterial walls and promote atherosclerosis.
• High Cholesterol: Elevated LDL cholesterol contributes to plaque formation.
• Smoking: Tobacco exposure significantly increases vascular disease and stroke risk.
• Diabetes: Diabetes can accelerate atherosclerosis and increase cardiovascular risk.
• Obesity and Physical Inactivity: These factors can contribute to high blood pressure, abnormal cholesterol, and other vascular risks.
• Previous TIA or Stroke: A previous neurological event may indicate an increased risk of future events.

Latest Research and Technologies in the Treatment of Carotid Artery Stenosis in Thailand

• Current advances in carotid artery stenosis management include improved vascular imaging, embolic-protection techniques during selected interventions, and refinements in carotid endarterectomy and carotid artery stenting. Transcarotid artery revascularisation (TCAR), which uses direct carotid access and temporary flow reversal during stenting, is another option for selected patients where the procedure is available. Treatment decisions increasingly consider whether symptoms have occurred, the degree of narrowing, plaque characteristics, vascular anatomy, procedural risk, and the effectiveness of contemporary medical therapy.