体外受精-胚胎移植术后同时非同位妊娠分析

目的：探讨体外受精-胚胎移植（IVF-ET）术后出现同时非同位妊娠（HP）的临床特点。方法：回顾性分析成都中医药大学第二附属医院生殖医学中心行IVF-ET术后出现的4例HP病例的临床资料，并复习相关文献。结果：发生HP者占IVF-ET后异位妊娠者的15.38%。4例HP患者均有输卵管阻塞病史，且血清人绒毛膜促性腺激素β亚单位（β-hCG）水平高于异位妊娠者。结论：HP与输卵管手术史、ET数目等因素有关；在妊娠早期，与宫腔内妊娠临床特点相似。

Analysis of the Heterotopic Pregnancy after in vitro Fertilization and Embryo Transfer

Objective：To investigate the clinical characteristics of heterotopic pregnancy （HP） after in vitro fertilization and embryo transfer （IVF-ET）. Methods：The clinical data of four patients with HP after IVF-ET was retrospectively analyzed, and then compared with literature. Results：The incidence of HP in ectopic pregnancy after IVF-ET was 15.38%. Four HP patients had tubal obstructions, did not have typical symptoms of ectopic pregnancy. They had higher levels of human chorionic gonadotrophin （β-hCG） than other patients with ectopic pregnancy after IVF-ET. Conclusions：HP is related to many factors, such as the history of surgical operation on oviducts，the number of transfer embryos. At the first stage of pregnancy, HP has the same clinical characteristics as normal uterine pregnancy.