宫内节育器(IUD)是近代广泛采用的一种避孕工具,到1977年世界上大约有五、六千万妇女使用这一工具。早在30年代Grafenberg及Ohta即观察到使用IUD的妇女较之未用者更易发生异位妊娠。至六十年代,随着IUD的推广,重又引起对此问题的注意。一、带器妇女中异位妊娠的发生率在不同的人群中,异位妊娠的发生率本来就有很大差异。加之统计方法和统计标准的紊乱,目前难以对异位妊娠的真正发生率 The IUD, a contraceptive widely used in modern times, was used by about 560 million women by 1977 in the world. As early as the 1930s, Grafenberg and Ohta observed that women who used IUD were more likely to have ectopic pregnancies than those who did not. By the 1960s, with the promotion of the IUD, it attracted the attention of this issue again. First, with the incidence of ectopic pregnancy in women In different populations, the incidence of ectopic pregnancy has been very different. Coupled with the statistical methods and statistical standards of disorders, the current eutopic pregnancy is difficult to the real incidence