一、异位妊娠发生率的变化趋势近20年来国内外均报告异位妊娠的发生率明显增高,在孕产妇死亡因素中异位妊娠所占的比例亦相对增加.Wcinstcin(1983)甚至提出它是一种特殊类型的流行病.80年代初美国报道它占孕产妇死亡的10～12%.上海市在1979～1986年8年中异位妊娠 First, changes in the incidence of ectopic pregnancy trends Over the past 20 years, both at home and abroad have reported a significantly increased incidence of ectopic pregnancy, maternal mortality in ectopic pregnancy also increased the proportion of relative.Wcinstcin (1983) even proposed it Is a special type of epidemic which was reported by the United States in the early 1980s as 10-12% of maternal deaths in Shanghai in the eight years from 1979 to 1986. Ectopic pregnancy