Management of Post-Angiography Carotid Dissection

Treatment Approach

The American College of Cardiology recommends initiating antithrombotic therapy immediately for 3-6 months using anticoagulation or antiplatelet therapy for patients with carotid dissection, with the choice based on individual hemorrhagic risk 1
Anticoagulation results in a stroke/death rate of 1% at 3 months and 1.6% at 1 year, compared to 2% and 3.2% with antiplatelet therapy 2
Transition to long-term antiplatelet therapy with aspirin or clopidogrel after 3-6 months is recommended 1

Reserve endovascular revascularization exclusively for patients with persistent or recurrent ischemic symptoms who do not respond to optimal antithrombotic therapy, with a recommendation Class IIb 1, 2
Endovascular complications include 5.5% of periprocedural neurological complications and 26% of restenosis at 12 months 2

Perform non-invasive imaging of the extracranial carotid arteries at 1 month, 6 months, and annually to assess patency and exclude the development of new lesions 1
The annual rate of recurrent stroke, TIA, or death is 8.3% with anticoagulants versus 12.4% with aspirin alone 2

Never anticoagulate if there is intracranial extension of the dissection with subarachnoid hemorrhage, as intracranial vertebrobasilar dissections have a higher risk of rupture 2