Hirai M, Naiki K, Nakayama R
Department of Surgery, Aichi Prefectural Owari Hospital, Japan.
Angiology. 1990 Mar;41(3):228-32. doi: 10.1177/000331979004100308.
The prevalence and risk factors of varicose veins in Japan were investigated in 541 Japanese women. Varicose veins were defined as any dilated, tortuous, and elongated veins of the lower extremity and classified into four types. The total prevalence rate was 45%. Saphenous type was observed in 22%, segment type in 35%, reticular type in 28%, and web type in 16%. Varicose veins in Japan seem to be less common than in the United States and Europe but more prevalent than in Africa. Concerning risk factors for varices, age, sex, heredity, and childbirth were related to the incidence of varicosities, as reported by others. However, these risk factors were shown to differ according to type of varicose veins.
在541名日本女性中对日本静脉曲张的患病率及风险因素进行了调查。静脉曲张被定义为下肢任何扩张、迂曲和伸长的静脉，并分为四种类型。总患病率为45%。隐静脉型占22%，节段型占35%，网状型占28%，网状细静脉型占16%。日本的静脉曲张似乎比美国和欧洲少见，但比非洲更普遍。关于静脉曲张的风险因素，正如其他人所报告的，年龄、性别、遗传和分娩与静脉曲张的发生率有关。然而，这些风险因素因静脉曲张的类型而异。
