Large Artery Atherosclerotic Occlusive Disease

Area of Science:

• Neurology
• Vascular Medicine
• Cardiology

Background:

• Large artery atherosclerosis (extracranial or intracranial) is a common cause of ischemic stroke and transient ischemic attack.
• Differentiating causative atherosclerotic lesions from incidental findings is clinically challenging.
• A structured approach is needed for evaluating and treating patients with large artery atherosclerosis.

Observation:

• Four clinical scenarios exist: asymptomatic/symptomatic extracranial carotid stenosis, intracranial atherosclerosis, and extracranial vertebral artery disease.
• Intensive medical therapy is effective for asymptomatic carotid stenosis.
• Severe symptomatic carotid stenosis warrants prompt revascularization, with endarterectomy often preferred over stenting, especially in older women.

Findings:

• Carotid endarterectomy shows lower stroke/death risk than stenting for symptomatic carotid stenosis.
• Older patients and women face higher risks with carotid stenting.
• Continuous risk factor optimization is crucial for preventing stroke in intracranial and vertebral artery atherosclerosis.

Implications:

• Lifelong risk factor management (behavioral changes, intensive medical therapy) is key for stroke prevention.
• Revascularization decisions for carotid stenosis must weigh patient factors and procedural risks.
• A systematic framework aids clinicians in managing large artery atherosclerosis to minimize stroke recurrence.