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所谓眼球杂音(ocular bruit eyeball br-uit)不是指眼球本身产生的杂音,而是指在眼球上听到的由颅内传来的血管杂音。研究发现颅内产生的血管杂音通过软组织的眼球比通过坚硬的颅骨更容易向外传导,因而眼球杂音的发生率相当高。在脑动静脉瘘、脑动静脉畸形、脑动脉硬化以及脑中风等病例均可听到眼球杂音。血管杂音达到一定强度,不仅在眼球而且在头部的其他部位也可昕到。例如,稚基底动脉系统产生的血管杂音除在眼球能够听到外,还可在枕部和颈后部听到。跟球杂音的生成原因眼球杂音分为生理性和病理性两种。小儿生理性眼球杂音:据Widia 等报告,4～7岁的小儿约半数可听到生理性眼球杂音。原因是:(1)小儿脑部血流量相对较多(约占心输出量的40%,成人占15%);(2)小儿Willis 环的交通支比较粗大;(3)与血管管径相比,小儿颅骨血管
The so-called ocular bruit eyeball (ocular bruit eyeball br-uit) does not mean that the noise generated by the eye itself, but refers to the eye heard from the intracranial vascular noise. The study found that intracranial vascular vocal cords transmitted more easily through the soft tissue of the eye than through hard skull, so the incidence of eyeball noise is quite high. Ocular murmur can be heard in cases of cerebral arteriovenous fistula, cerebral arteriovenous malformation, cerebral arteriosclerosis and stroke. Vascular murmur to a certain intensity, not only in the eye but also in other parts of the head can also Xin to. For example, vascular murmur produced by the basilar artery system can be heard on both the occipital and posterior neck, in addition to being audible to the eyeball. Generated with the noise of the ball Eyeballs are divided into physiological and pathological two. Physiological eyeball noise in children: According to reports such as Widia, 4 to 7-year-old children can be heard about half of physiological eyeball noise. The reasons are: (1) pediatric brain blood flow is relatively large (accounting for 40% of cardiac output, adult 15%); (2) Willis ring traffic pediatric relatively coarse; (3) and vascular diameter Than, children’s skull blood vessels