Atherosclerotic intracranial arterial stenosis: risk factors, diagnosis, and treatment

Area of Science:

• Neurology
• Vascular Medicine
• Cardiology

Background:

• Intracranial atherosclerosis is a leading cause of stroke globally.
• It carries a substantial risk of recurrent stroke events.
• Current treatments include dual antiplatelet therapy, risk factor management, and endovascular therapy.

Purpose of the Study:

• To review current therapeutic approaches for intracranial atherosclerosis.
• To evaluate the efficacy of aggressive medical therapy versus stenting.
• To identify needs for future research and novel treatments.

Main Methods:

• Review of randomized trial data comparing aggressive medical therapy and stenting.
• Discussion of non-invasive vascular imaging techniques for risk stratification.
• Consideration of alternative therapies for future clinical trials.

Main Results:

• Early data suggest aggressive medical therapy is superior to stenting for preventing recurrent stroke in major intracranial artery stenosis.
• Certain patient subgroups remain at high risk despite optimal medical management.
• Non-invasive imaging like MRA and high-resolution MRI can identify high-risk patients.

Conclusions:

• Aggressive medical therapy is a key strategy for preventing recurrent stroke in intracranial atherosclerosis.
• Identifying and managing high-risk subgroups requires further investigation.
• Future research should explore novel therapies such as angioplasty, bypass, and new anticoagulants.