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Liu M.,Shandong University | Liu M.,National Research Center for Assisted Reproductive Technology and Reproductive Genetic | Liu M.,Key Laboratory for Reproductive Endocrinology of Ministry of Education | Liu M.,Shandong Provincial Key Laboratory of Reproductive Medicine | And 39 more authors.
PLoS ONE | Year: 2015

This study investigated the risk factors and early predictors for heterotopic pregnancy (HP) after in vitro fertilization and embryo transfer (IVF-ET). From January 2008 to January 2013, 41 cases of HP and 72 cases of intrauterine twin pregnancy after IVF-ET were recruited and retrospectively analyzed. Compared with intrauterine twin pregnancy group, the HP group had a lower basal luteinizing hormone (LH) level (P = 0.005) and more cases had a history of hydrosalpinx (P = 0.008). After 14 days of IVF-ET, the serum β-HCG (β-human chorionic gonadotropin), E2 (Estradiol) and P (Progesterone) levels were lower in HP group (P<0.001, respectively). Moreover, vaginal bleeding and abdominal pain were the significant features of HP before diagnosis (P<0.001, respectively). Further by logistic regression, serum β-hCG, P levels on the 14th day after ET, and vaginal bleeding were identified as the independent factors of HP. These results indicate that when two or more embryos transferred in IVF procedure, β-hCG, P levels on the 14th day after ET, and vaginal bleeding could be taken as predictors for HP. © 2015 Theis et al.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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