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本文报道200例60岁以上老年人脑血流图的测定结果,并与184例青年人的脑血流图进行比较分析。老年人脑血流图的特点,主要表现为:波型发生一定变化(转折波增多,乳头、圆顶、平顶等波的比例也有所增多),重搏波减低或消失,波幅下降,两侧波幅的不对称有所增加,上升时间延长,上升角变小,顶夹角变钝,流入容积速度减慢,转折高此值和血管弹力指数变小,紧张度指数和血管阻力指数增大等。
This paper reports the results of the determination of cerebral blood flow in 200 elderly people over the age of 60 and compared with the cerebral blood flow of 184 young people. Cerebral blood flow in elderly patients with the characteristics of the main manifestations: a certain change in the wave pattern (increased turning waves, nipples, domes, flat-topped waves also increased the proportion of), reduced or disappeared pacing wave amplitude decreased, two The asymmetry of side amplitude increased, the rise time was longer, the angle of rise was smaller, the angle of top was blunted, the volume of inflow was slowed down, the value of turning point was higher and the index of vascular elasticity was smaller, and the index of tension and the index of vascular resistance increased Wait.