Asymptomatic cervical artery stenoses in Moscow

Area of Science:

• Neurology
• Vascular Medicine
• Epidemiology

Background:

• Asymptomatic carotid artery stenosis increases stroke risk, particularly with high-grade or rapidly progressive lesions.
• Population prevalence data is crucial for developing screening strategies to identify individuals requiring prophylactic treatment.
• Cervical artery obstructions are significant risk factors for cerebrovascular events.

Purpose of the Study:

• To determine the prevalence and severity of extracranial carotid and vertebral artery obstructions in an asymptomatic Russian population.
• To identify risk factors associated with cervical artery lesions in this demographic.
• To compare findings with international reports on arterial stenosis prevalence.

Main Methods:

• Doppler sonography was used to assess 529 asymptomatic Russian individuals (343 males, 186 females; aged 36-84 years).
• Prevalence of >50% stenosis in internal carotid arteries and vertebral arteries was calculated.
• Statistical analysis was performed to identify correlations between arterial lesions and risk factors like hypertension, age, smoking, diabetes, and hyperlipoproteinemia.

Main Results:

• Internal carotid artery stenosis (>50%) was found in 4.2% of subjects, with bilateral lesions in 1.5%.
• Vertebral artery abnormalities were present in 2.1% of subjects, with bilateral involvement in one case.
• Hypertension was the most significant risk factor; age and smoking were also associated with carotid lesions. No sexual differences were observed.

Conclusions:

• The prevalence of cervical artery stenoses in this Moscow-based Russian population appears lower than reported in Western studies.
• Hypertension is a key risk factor for cervical arterial lesions, underscoring its importance in vascular health management.
• Further research is needed to understand discrepancies in prevalence possibly due to technical or design differences in studies.