Predictors of Perioperative Stroke/Death after Carotid Artery Stenting: A Review Article

Area of Science:

• Vascular Surgery
• Interventional Cardiology
• Neurology

Background:

• Carotid artery stenting (CAS) is an alternative to carotid endarterectomy for significant carotid stenosis.
• Few studies comprehensively analyze factors influencing CAS perioperative outcomes.
• Identifying predictors of stroke and death after CAS is crucial for patient safety.

Purpose of the Study:

• To review and synthesize data on clinical, anatomical, and technical variables affecting perioperative outcomes of CAS.
• To identify key predictors of stroke and death following CAS procedures.

Main Methods:

• Comprehensive Medline search to identify relevant studies.
• Analysis of clinical, angiographic, and technical factors associated with perioperative stroke and death rates.
• Review of data presented at the 45th Annual Meeting of the Japanese Society for Vascular Surgery.

Main Results:

• Clinical factors like advanced age (>80), renal failure, diabetes, and recent transient ischemic attack symptoms increase perioperative risk.
• Angiographic findings such as ulcerated/calcified plaques, severe stenosis (>90%), and specific arch/artery angulations are linked to higher stroke rates.
• Technical factors like percutaneous transluminal angioplasty (PTA) without embolic protection and multiple stent use are associated with increased perioperative stroke risk.

Conclusions:

• Patient age, comorbidities, lesion characteristics, and specific procedural techniques significantly impact perioperative stroke and death rates after CAS.
• Understanding these predictors can help optimize patient selection and procedural strategies to improve CAS safety and outcomes.