先兆子痫和子痫在孕妇中发病率为6%～8%。1992年英国子痫研究组确诊了383例子痫病例,并提出子痫状态的严重后果应引起重视。1997年Leitch等指出在过去的60多年里,尽管产后子痫发病率有所升高,但子痫的发病率已经从74/10000降到了7.4/10000。美国一项研究在1992～2002年间确诊了 Pre-eclampsia and eclampsia in pregnant women in the incidence of 6% to 8%. In 1992, the study group of eclampsia in England confirmed 383 cases of eclampsia and proposed serious consequences of eclampsia state should pay attention. In 1997, Leitch et al. Pointed out that in the past 60 years, although the incidence of postpartum eclampsia has risen, the incidence of eclampsia has dropped from 74/10000 to 7.4 / 10000. A study in the United States was diagnosed between 1992 and 2002