异位妊娠是妇产科常见的急腹症之一,发病率各地报导不同,农村有增加趋势。病因尚在研讨,公认由多种因素造成,即:既往有过输卵管损伤;输卵管炎症;医源性因素(腹部或盆腔做过手术)。据近来报告及作者的临床观察,认为既往做过输卵管绝育术,也属本病的一种诱因。作再回顾了美国俄亥俄州Dayton市五大医院,1970～1977年,妊娠总数86,809人,行绝育术23,739人,输卵管妊娠721人(其中33人有输卵管绝育术史)。33人中,2/3患者是在2(1/2)年内做的绝育术,最短者仅间隔 Ectopic pregnancy is one of the common acute abdomen obstetrics and gynecology, the incidence reported around the different countries have an increasing trend. Etiology is still being studied, is recognized by a variety of factors, namely: there have been tubal damage; fallopian tube inflammation; iatrogenic factors (abdominal or pelvic surgery done). According to recent reports and the author’s clinical observations, that had done tubal sterilization, but also a cause of the disease. Looking back at the five major hospitals in Dayton, Ohio, USA, from 1970 to 1977, there were 86,809 pregnancies, 23,739 people undergoing sterilization and 721 tubal pregnancies (33 of whom had a history of tubal sterilization). Two out of 33 patients are those who have undergone sterilization within 2 (1/2) years, with the shortest being intervals