Gleicher N, Parrilli M, Pratt D E
Center for Human Reproduction, Chicago, Illinois 60610.
Fertil Steril. 1992 Mar;57(3):553-8. doi: 10.1016/s0015-0282(16)54899-7.
To determine the validity of hystersalpingography (HSG) and/or bilateral selective salpingography in the differential diagnosis of early (biochemical) intrauterine versus intratubal abortions.
The study design involved the performance of HSG and selective salpingography in sequential patients with low declining beta-human chorionic gonadotropin (beta-hCG) values.
Medical School-affiliated Infertility Center.
Four sequential pregnant infertility patients who demonstrated declining beta-hCG levels before pregnancy could be confirmed by ultrasound (chemical pregnancies).
Three of four patients demonstrated a characteristic tubal opacification pattern in conjunction with a normally appearing endometrial cavity, considered diagnostic of an early tubal pregnancy. In contrast, a missed intrauterine pregnancy (IUP) demonstrated a characteristically abnormal endometrial cavity.
Some early (chemical) pregnancy losses are intratubal rather than intrauterine. The correct differential diagnosis of early missed IUPs versus intratubal pregnancies is important because of its prognostic significance.
确定子宫输卵管造影术（HSG）和/或双侧选择性输卵管造影术在鉴别早期（生化）宫内妊娠与输卵管内流产中的有效性。
该研究设计包括对β-人绒毛膜促性腺激素（β-hCG）值持续下降的连续患者进行HSG和选择性输卵管造影术。
医学院附属不孕不育中心。
四名连续的妊娠不孕患者，在妊娠前β-hCG水平持续下降，经超声检查可确诊（化学妊娠）。
四名患者中有三名表现出特征性的输卵管显影模式，同时子宫内膜腔外观正常，被认为是早期输卵管妊娠的诊断依据。相比之下，稽留流产的宫内妊娠表现为特征性的异常子宫内膜腔。
一些早期（化学）妊娠丢失发生在输卵管内而非宫内。早期稽留流产与输卵管内妊娠的正确鉴别诊断很重要，因为它具有预后意义。
