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[Endothelium dysfunction in patients with ischemic stroke].

A A Shutov, T V Baĭdina, A V Agafonov

    Zhurnal Nevrologii I Psikhiatrii Imeni S.S. Korsakova
    |September 28, 2005
    PubMed
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    Endothelial dysfunction, a key factor in ischemic stroke, is linked to high cholesterol and smoking. This impairment affects brachial artery function and is more common in severe stroke cases.

    Area of Science:

    • Neurology
    • Vascular Biology
    • Cardiovascular Medicine

    Background:

    • Endothelial dysfunction is a critical factor in the pathophysiology of ischemic stroke.
    • Assessing endothelial function provides insights into cerebrovascular health and stroke risk.
    • Understanding the determinants of endothelial dysfunction is crucial for stroke prevention and management.

    Purpose of the Study:

    • To evaluate vasomotor endothelial function in patients with ischemic stroke.
    • To identify factors associated with impaired endothelial-dependent vasodilation.
    • To correlate the degree of endothelial dysfunction with stroke characteristics and cerebrovascular findings.

    Main Methods:

    • Utilized ultrasound to assess brachial artery reactivity to reactive hyperemia in 57 ischemic stroke patients.

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  • Performed duplex scanning of brachiocephalic arteries.
  • Analyzed associations between endothelial function and clinical/imaging data.

    • Main Results:

    • Twenty-four patients (42%) exhibited impaired endothelial-dependent vasodilation.
    • Endothelial dysfunction was significantly associated with elevated cholesterol levels and smoking.
    • No significant association was found with aging, family history, or arterial hypertension.
    • Vasomotor dysfunction correlated with intima-media thickness, carotid plaques, and internal carotid artery occlusion.
    • Impaired vascular relaxation was more prevalent in atherothrombotic stroke and severe brain damage.

    Conclusions:

    • Endothelial dysfunction is common in ischemic stroke patients and linked to cholesterol and smoking.
    • The degree of vasomotor dysfunction correlates with atherosclerosis markers and stroke severity.
    • These findings highlight the importance of managing vascular risk factors in stroke patients.