颈总动脉狭窄与一过性黑矇
Common carotid artery stenosis and amaurosis fugax.
作者信息
Hoya Kastumi, Morikawa Eiharu, Tamura Akira, Saito Isamu
机构信息
Department of Neurosurgery, Fuji Brain Institute and Hospital, Fujinomiya, Shizuoka, Japan.
出版信息
J Stroke Cerebrovasc Dis. 2008 Jan-Feb;17(1):1-4. doi: 10.1016/j.jstrokecerebrovasdis.2007.08.003.
BACKGROUND
Clinical characteristics of common carotid artery (CCA) stenosis have been reported relatively rarely, compared with those of internal carotid artery (ICA) stenosis. The current retrospective study aimed to clarify the symptomatology of CCA stenosis.
METHODS
Summarized records of patients admitted were reviewed to identify patients with CCA stenosis or extracranial ICA stenosis. Clinical histories and neurologic symptoms were identified and analyzed.
RESULTS
CCA stenosis was present in 12 patients (symptomatic, n = 8; asymptomatic, n = 4). Among symptomatic patients, 4 (50%) had amaurosis fugax. Among 137 patients with symptomatic extracranial ICA stenosis, amaurosis fugax occurred in 9 patients (6.6%).
CONCLUSIONS
Frequency of amaurosis fugax was significantly higher in CCA stenosis than in ICA stenosis. Patients with CCA stenosis may be susceptible to transient hemodynamic insufficiency of the retina as a result of simultaneous reductions in blood supplies from both the external carotid artery and the ICA.
背景
与颈内动脉（ICA）狭窄的临床特征相比，关于颈总动脉（CCA）狭窄临床特征的报道相对较少。当前这项回顾性研究旨在阐明CCA狭窄的症状学表现。
方法
对收治患者的汇总记录进行回顾，以确定患有CCA狭窄或颅外ICA狭窄的患者。对临床病史和神经症状进行识别与分析。
结果
12例患者存在CCA狭窄（有症状者8例；无症状者4例）。在有症状的患者中，4例（50%）出现一过性黑矇。在137例有症状的颅外ICA狭窄患者中，9例（6.6%）出现一过性黑矇。
结论
CCA狭窄患者一过性黑矇的发生率显著高于ICA狭窄患者。CCA狭窄患者可能因颈外动脉和ICA供血同时减少而易发生视网膜短暂血流动力学不足。
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