Tamara SandodzeSechenov First Moscow State Medical University, Russian Federation
Title: Impact of the blood flow restoration in the internal carotid artery on microcirculation of the brain structures (eye retina)
Disturbances of hemodynamics in the carotid arteries due to stenotic-occlusive atherosclerosis are the most common cause of ischemic stroke and transient ischemic attacks in adults all over the world. The restoration of the disturbed arterial blood flow is performed using surgical – by carotid endarterectomy (CEA), or endovascular – using carotid arterial stenting (CS). Successful restoration of the blood flow in the carotid artery and its major branches provided by these therapeutic procedures can be evidenced by contrast-enhanced angiography, computed tomography, magnetic resonance tomography and ultrasound Doppler (USD). It is far more difficult to obtain the information concerning the changes occurring at microcirculatory level in brain structures supplied by carotid artery and its branches. Contrast-enhanced angiography does not allow to study this level of circulation. Meanwhiletheinformationontheconditionofthislevelofbrainbloodsupplyappears very important and, in the same time, not less complex. It seems logical, that dynamical study of one of the brain structure, namely, the eye vessels, can provide valuable information on the results of therapeutic procedures aimed at the restoration of disturbed cerebral blood supply. All the more so, the modern methods of study allow performing this task without significant technical difficulties. At the same time, to date just few works have been dedicated to the study of eye circulation changes at the level of retina after successful restoration of adequate blood flow in the carotid arteries. Such works can provide more clarity in what concerns the effectiveness of carotid arterial blood flow restoration not only on the macro circulatory, but also in cerebral microcirculatory level. Our study comprising 50 patients was aimed at the study of the early follow-up after the stenting of the internal carotid artery and of the impact of this procedure on the condition of the eye blood supply.
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