Carotid Stenting After Stroke: Indications and Contraindications

Primary Indication: Degree of Stenosis

• The American Heart Association recommends stenting for symptomatic patients with ≥70% stenosis who are not surgical candidates due to technical, anatomic, or medical reasons, but only when performed by operators with documented periprocedural stroke/death rates <6% 1, 2, 3
• Stenting is appropriate for symptomatic stenosis ≥70% by noninvasive imaging or ≥50% by catheter angiography when specific conditions are met, as recommended by the American College of Cardiology 1, 4
• For stenosis <50%, there is absolutely no indication for any revascularization, including stenting, as stated by the American Heart Association 1, 4

When TO Stent: Specific Clinical Scenarios

• The American Stroke Association suggests that stenting may be considered when surgical access is difficult or specific high-risk surgical conditions exist, such as radiation-induced stenosis or restenosis after previous endarterectomy 1, 4, 5
• Stenting may be considered for patients with severe medical comorbidities that substantially increase surgical risk, as recommended by the American College of Cardiology 1, 2

When NOT to Stent: Critical Contraindications

• The American Heart Association recommends that age >70 years is a relative contraindication to stenting, with endarterectomy being definitively superior in this population, with a stroke risk of 1% for endarterectomy versus 3% for stenting 2, 3, 6
• Stenting should not be performed if the operator/center cannot demonstrate periprocedural stroke/death rates <6% for symptomatic patients, as stated by the American College of Cardiology 1, 4, 6, 7

Operator and Center Requirements

• The American College of Cardiology recommends that the operator must have established periprocedural morbidity/mortality rates of 4-6% for symptomatic patients, similar to surgical benchmarks 1, 4, 5
• The center must routinely audit performance results, particularly perioperative stroke and death rates, as recommended by the American Heart Association 2, 3, 8

Mandatory Concurrent Medical Management

• The American Heart Association recommends that all patients, regardless of whether they undergo stenting, must receive aggressive medical management, including antiplatelet therapy, high-intensity statin therapy, blood pressure control, and risk factor modification 1, 3, 4, 6, 8