Carotid Artery Dissection Treatment
Diagnosis
- The American College of Cardiology recommends CT angiography, MR angiography, or invasive angiography with contrast as the preferred imaging modalities for diagnosing carotid artery dissection (Class I recommendation) 1, 2
- Ultrasound Doppler of the neck may miss dissections that originate above the jaw angle or dissections of the vertebral artery 3
Medical Treatment
Antithrombotic Treatment
- For patients with symptomatic carotid artery dissection, antithrombotic treatment is recommended for 3-6 months (Class IIa recommendation) 4, 5
- The treatment can be either anticoagulation with heparin followed by warfarin or antiplatelet therapy with aspirin or clopidogrel 1, 2, 6
- After 3-6 months, antiplatelet therapy with aspirin (81-325 mg/day) or clopidogrel (75 mg/day) is recommended 1, 2, 6
Additional Medical Treatment
- The safety and efficacy of beta blockers, angiotensin inhibitors, or non-dihydropyridine calcium channel blockers (verapamil or diltiazem) for blood pressure control and reduction of arterial wall stress are not well established (Class IIb recommendation) 1, 2, 6
Invasive Treatment
- Angioplasty and stenting of the carotid artery may be considered in cases where neurological symptoms do not respond to antithrombotic treatment after acute carotid dissection (Class IIb recommendation) 1, 2, 6
Epidemiology
- Carotid artery dissection accounts for approximately 2% of all ischemic strokes, but in young patients (under 45 years), it accounts for 10-15% of strokes 7, 8
- The typical symptoms include unilateral headache or neck pain, accompanied by Horner's syndrome (asymmetric eyelid ptosis, miosis, and anhidrosis) 7, 8
- After these warning symptoms, cerebral or retinal ischemia develops in 50% to 95% of carotid artery dissection cases 7, 8
Initial Management of Internal Carotid Artery Dissection
Antithrombotic Treatment
- The American Heart Association recommends antiplatelet therapy with aspirin (81-325 mg daily) or clopidogrel (75 mg daily) as an alternative to anticoagulation for initial management of internal carotid artery dissection 9
Blood Pressure Management
- Administration of antihypertensive medication is recommended to control blood pressure, according to the Journal of Neurointerventional Surgery 10
Invasive Treatment Considerations
- Embolic protection device deployment during carotid artery stenting can be beneficial to reduce stroke risk when vascular injury risk is low, as reported in the Journal of Neurointerventional Surgery 10