Journal of International Reproductive Health/Family Planning ›› 2023, Vol. 42 ›› Issue (1): 7-12.doi: 10.12280/gjszjk.20220342

• Original Article • Previous Articles     Next Articles

Analysis of Affecting Factors on Clinical Pregnancy Outcomes in GnRH Antagonist Protocol

SHENG Jia-jia, DAI Zhi-jun, TANG Zhi-xia, YAN Chun, HONG Ming-yun()   

  1. Reproductive Medicine Center, Anhui Provincial Maternal and Child Health Hospital, Hefei 230001, China
  • Received:2022-07-14 Published:2023-01-15 Online:2023-02-03
  • Contact: HONG Ming-yun E-mail:2006mingyun@sina.com

Abstract:

Objective: To investigate the factors influencing the clinical pregnancy outcomes of gonadotropin releasing hormone (GnRH) antagonist protocol. Methods: Data of 262 treatment cycles undergoing in vitro fertilization/intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET) in GnRH antagonist protocol at the Reproductive Medicine Center of Anhui Provincial Maternal and Child Health Hospital from January 2017 to March 2022 were retrospectively analyzed. According to clinical pregnancy outcomes, they were assigned to the clincial pregnant group and the non-pregnant group. Multiple logistic regression analysis and the receiver operating characteristic curve (ROC) were used to analyze the risk factors affecting clinical pregnancy outcomes, and the cut-off values were calculated. Results: The thickness of endometrium on the hCG trigger day was a protection factor affecting clinical pregnancy outcomes(OR=1.421, P<0.001). The cut-off value of endometrial thickness was 11 mm, and the area under the curve analysis of endometrial thickness was 0.702. Too thin endometrial thickness (<9 mm) was companied by the lowest implant rate. The clinical pregnancy rate in the 11 mm<x<15 mm group was significantly higher than that in the x<9 mm group and the 9 mm≤x≤11 mm group(P<0.05), but there was no significant difference with 15 mm≤x<20 mm (P>0.05). There was no significant difference in the miscarriage rate among these groups (P>0.05). The type of A endometrium on the hCG trigger day had better clinical pregnancy outcomes than the type B/C (OR=3.425, P=0.006). Conclusions: Endometrial thickness >11 mm and the Type A on the hCG trigger day were two protection factors affecting clinical pregnancy outcomes in GnRH antagonist protocol. The excessively thickened or thin endometrial thickness on the hCG trigger day should attract our attention.

Key words: Endometrium, Fertilization in vitro, Embryo transfer, Ovulation induction, Clinical pregnancy outcome