An epidemiologic study of cerebrovascular disease in western Japan: with special reference to transient ischemic attacks.
An epidemiologic study of cerebrovascular disease in western Japan: with special reference to transient ischemic attacks.
复制标题
日本西部脑血管疾病的流行病学研究：特别涉及短暂性脑缺血发作。
作者：
K. Urakami;M. Igo;K. Takahashi
在日本西部的大山镇和阿间镇对脑血管疾病（特别是短暂性脑缺血发作（TIA））的患病率和发病率进行了研究。日本此前尚未有过这方面的报道。据估计，每 1,000 名 40 岁以上的人中，大仙市有 4.4 例 TIA 患病率，阿玛市有 2.0 例 TIA 患病率。颈动脉系统TIA与椎基底动脉系统TIA的比例约为1比1。各年龄段的中风发病率为每10万人中大仙市319.6例、阿玛市314.5例。据估计，每 1000 名所有年龄段的人中，大仙市和阿玛市的中风患病率为 14.8 例和 13.5 例。日本TIA的患病率约为西方国家的三分之一至二分之一。然而，与西方国家相比，日本完全中风的患病率要高得多。因此，日本TIA与中风的比例远低于西方国家。在日本，除心脏病外，颅内小动脉阻塞也可能在 TIA 中发挥重要作用，而在西方国家，TIA 可能主要由心脏病或颅外动脉粥样硬化引起。
The prevalence and incidence ratios of cerebrovascular disease, with special reference to transient ischemic attack (TIA), were studied in the towns of Daisen and Ama in western Japan. There have been no previous reports on this subject in Japan. The prevalence ratios of TIA were estimated to be 4.4 in Daisen and 2.0 in Ama per 1,000 people over 40 years old. The ratio of carotid arterial system TIA to vertebrobasilar arterial system TIA was about 1 to 1. The incidence ratios of stroke were 319.6 in Daisen and 314.5 in Ama per 100,000 people of all ages. The prevalence ratios of stroke were estimated to be 14.8 in Daisen and 13.5 in Ama per 1,000 people of all ages. The prevalence ratio of TIA in Japan is about one-third to one-half of that in Western countries. However, the prevalence of complete stroke is much higher in Japan compared with that in Western countries. Therefore, the ratio of TIA to stroke is much lower in Japan than in Western countries. The obstruction of small intracranial arteries, in addition to heart disease, might play an important role in TIA in Japan, whereas in Western countries TIA might be mostly caused by heart disease or the atherosclerosis of extracranial arteries.