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为明确颈动脉闭塞(包括95%以上严重狭窄)后颅内血流动力学的变化,应用透颅多普勒,结合指压及CO2反应性试验,观察研究了60名颈动脉闭塞患者。结果表明:同侧大脑半球对非闭塞颈内动脉的依赖性显示双峰型分布:85%以下狭窄的31名病人中,26名呈现完全依赖;85%以上颈动脉狭窄的14名病人中,10名呈现完全不依赖。在依赖半球的脑血流速度的CO2反应性,与同侧颈动脉的狭窄程度呈负相关。结论:在一侧颈动脉闭塞的病人,非闭塞侧大脑半球对同侧颈动脉依莉程度的评价可预测中风的危险性。
To clarify the changes of intracranial hemodynamics after carotid artery occlusion (including more than 95% severe stenosis), 60 patients with carotid artery occlusion were studied by transcranial Doppler, combined with acupressure and CO2 reactivity test. The results showed that: ipsilateral hemisphere on the non-occlusion of the internal carotid artery dependence showed bimodal distribution: 85% of the stenosis in 31 patients, 26 were completely dependent; 85% of carotid stenosis in 14 patients, 10 presented completely independent. The CO2 reactivity in hemisphere-dependent cerebral blood flow was negatively correlated with the degree of stenosis in the ipsilateral carotid artery. CONCLUSIONS: In patients with a carotid artery occlusion on one side, assessment of ileal carotid artery compliance in the non-occlusive hemisphere predicts the risk of stroke.