Loffer F D
J Reprod Med. 1986 Feb;31(2):74-7.
The incidence of ectopic pregnancies tripled between 1970 and 1980. Nonwhite patients are at considerably greater risk in all categories surveyed than are white ones. Numerous reasons for the increase have been postulated, including a possible increase in pelvic inflammatory disease, microsurgical procedures on diseased tubes, the increased number of sterilizations and an increase in the number of recognized cases. Ultrasound and beta-human chorionic gonadotropin pregnancy tests coupled with laparoscopy allow earlier and more accurate diagnosis of this problem. Deaths related to ectopic pregnancies have decreased because of the better diagnostic methods available and increased clinician awareness.
1970年至1980年间，异位妊娠的发病率增加了两倍。在所有调查类别中，非白人患者比白人患者面临的风险要高得多。人们推测了发病率增加的许多原因，包括盆腔炎可能增加、对患病输卵管进行显微外科手术、绝育手术数量增加以及确诊病例数量增加。超声检查、β-人绒毛膜促性腺激素妊娠试验以及腹腔镜检查相结合，能够更早、更准确地诊断这一问题。由于有了更好的诊断方法以及临床医生的意识提高，与异位妊娠相关的死亡人数有所下降。
