Journal of International Reproductive Health/Family Planning ›› 2022, Vol. 41 ›› Issue (4): 265-269.doi: 10.12280/gjszjk.20220104

• Original Article •     Next Articles

Effect of the Descend Range of Estradiol after Oocyte Retrieval in Antagonist Regimen on the Outcome of In Vitro Fertilization and Embryo Transfer

ZHOU Yu-xi, ZHANG Juan, ZHANG Juan-juan, LING Xiu-feng, ZHAO Chun()   

  1. Center of Reproductive Medicine, Women′s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, China
  • Received:2022-02-25 Published:2022-07-15 Online:2022-07-20
  • Contact: ZHAO Chun E-mail:zhaochun2008@yeah.net

Abstract:

Objective: To study the effect of the descend range of estradiol (E2) at 48 h after oocyte retrieval compared with 24 h before oocyte retrieval on the pregnancy outcomes of fresh embryo transfer in the antagonist regimen. Methods: A retrospective study was done on the clinical data from 413 cycles of fresh embryo transfer, from January 2017 to March 2021. According to the descend range of E2 48 h after oocyte retrieval compared with 24 h before oocyte retrieval, they were divided into four groups according to the quartile method. Group A: The descend range is 0-25.0% of the overall descend range; Group B: 25.1%-50.0%; Group C: 50.1%-75.0%; Group D: 75.1%-100.0%. The ovulation induction, embryological outcome and pregnancy outcomes were compared, and the relationship between E2 reduction and live birth rates was analyzed by logistic regression. Results: There were significant differences in the total amount of Gn, days of antagonist use, live birth rates, implantation rates and clinical pregnancy rates among the four groups (all P<0.05). The live birth rate of group A was higher than group D, group B was higher than those of group C and group D, and the implantation rates of group A and group B were higher than group D (all P<0.008 3). After adjusting for the factors of differences among groups, the live birth rates of groups A and B were significantly higher than those of group D (OR=2.079, 95%CI: 1.138-3.799, P=0.017; OR=2.187, 95%CI: 1.213-3.944, P=0.009). Conclusions: In the antagonist regimen, the live birth rate of fresh embryo transfer in patients with a greater descend range of E2 at 48 h after oocyte retrieval is lower than that in patients with less descend range of E2.

Key words: Gonadotropin-releasing hormone, Estradiol, Ovulation induction, Fertilization in vitro, Sperm injections, intracytoplasmic, Embryo transfer, Live birth, Pregnancy outcome