Management of Left Internal Carotid Artery Stenosis with 70% Stenosis

Initial Assessment and Diagnosis

• The European Society of Cardiology recommends confirming the 70% stenosis using the NASCET method or non-invasive equivalent, as this is the standardized approach for measuring carotid stenosis 1
• Duplex ultrasound (DUS) is the recommended first-line imaging modality for diagnosing and confirming carotid stenosis, according to the European Heart Journal 1
• Assessment by a vascular team including a neurologist is essential to determine the optimal management strategy, as stated by the European Heart Journal 1

Management Algorithm Based on Symptom Status

For Symptomatic Patients (with recent stroke/TIA):

• The European Heart Journal strongly recommends performing carotid endarterectomy (CEA) within 14 days of symptom onset for symptomatic patients with 70%-99% stenosis and documented 30-day procedural risk of death/stroke <6% 1
• The European Heart Journal recommends initiating dual antiplatelet therapy (DAPT) with low-dose aspirin and clopidogrel (75 mg) for at least 21 days if CEA is delayed, and continuing with either clopidogrel 75 mg or long-term aspirin after 21 days 1
• The European Heart Journal suggests implementing optimal medical therapy (OMT) including statins, blood pressure control, and other cardiovascular risk factor management for symptomatic patients 1

For Asymptomatic Patients:

• Consider antiplatelet therapy (low-dose aspirin) to reduce stroke and cardiovascular risk, as recommended by the European Heart Journal 3

Post-Intervention Follow-up

• The European Heart Journal recommends performing DUS surveillance within the first month after carotid revascularization 1
• The European Heart Journal suggests initiating long-term aspirin or clopidogrel for patients who undergo CEA 1
• The European Heart Journal recommends DAPT with aspirin and clopidogrel for at least 1 month, followed by long-term aspirin or clopidogrel, for patients who undergo stenting 1
• The European Heart Journal recommends scheduling annual follow-up to assess neurological symptoms, cardiovascular risk factors, and treatment adherence 1

Important Considerations and Pitfalls

• Carotid artery stenting (CAS) may be considered as an alternative to CEA in selected patients, particularly those with unfavorable neck anatomy for surgery, according to Praxis Medical Insights 2