椎骨動脈血流とめまい•平衡障害についての考察

概要

論文の詳細を見る
The total blood flow of all the tour cervical vessels and the so-called cardiac output were measured by means of impedance cardiography.In the cases of both acute Menieres disease and brain circulation disturbance, the total cervical blood flow and cardiac output decreased in comparison with those of normal subjects.However, it was imposible to estimate the blood flow of each cervical vessel by this method.Therefore, the blood flow velocity of the vertebral and common carotid arteries was then measured by means of the ultrasonic Dopplers method.In the vertebral arteries of vertigenous patients, low blood flow velocity and asymmetry in blood flow velocity were found more often than in normal subjects.The result suggested that the asymmetry in blood flow velocity in the vertebral arteries enhanced susceptibility to circulatory disturbance in the vestibular area and inner ear.It wus considered that the above mentioned method was useful for estimating the risk factor of induced vertigo and/or dizziness.
社団法人日本耳鼻咽喉科学会の論文