Angioplasty and stenting for stroke prevention: good questions that need answers

Area of Science:

• Neurology
• Vascular Surgery
• Interventional Neuroradiology

Background:

• Extracranial and intracranial angioplasty with stenting of cerebral vessels is a growing interventional procedure.
• A clinical trial indicated comparable outcomes between extracranial carotid angioplasty and carotid endarterectomy.
• However, outcomes in both treatment groups were suboptimal, raising concerns about efficacy and safety.

Purpose of the Study:

• To evaluate the current landscape and outcomes of angioplasty and stenting for cerebral vessel stenosis.
• To address concerns regarding the iatrogenic stroke rate associated with these endovascular procedures.
• To explore the potential of angioplasty for intracranial stenosis and vertebrobasilar lesions.

Main Methods:

• Review of clinical trial data comparing angioplasty with endarterectomy for carotid stenosis.
• Analysis of procedural outcomes and complication rates, focusing on stroke incidence.
• Assessment of the application of angioplasty for intracranial and vertebrobasilar diseases.

Main Results:

• Extracranial carotid angioplasty demonstrated equivalent outcomes to carotid endarterectomy in one trial.
• Suboptimal results were observed in both angioplasty and endarterectomy groups.
• Significant concerns exist regarding the risk of stroke following angioplasty, especially in asymptomatic patients.

Conclusions:

• Angioplasty and stenting are increasingly utilized for cerebral vessel stenosis, with mixed results.
• The iatrogenic stroke rate remains a critical concern, necessitating further investigation and improved techniques.
• Angioplasty represents a potential treatment for intracranial stenosis and vertebrobasilar lesions, though evidence is limited and procedures are often uncontrolled.