Ultrasound Characteristics of Early Pregnancy in Women Undergoing in vitro Fertilization and Embryo Transfer
10.3969/j.issn.1005-5185.2025.01.012
- VernacularTitle:体外受精-胚胎移植孕妇早孕期超声特点
- Author:
Tiantian LIANG
1
;
Qingqing WU
1
;
Xiaofei LI
1
;
Jingjing WANG
1
Author Information
1. 首都医科大学附属北京妇产医院超声科 北京妇幼保健院,北京 100026
- Publication Type:Journal Article
- Keywords:
In vitro fertilization-embryo transfer;
Early pregnancy;
Ultrasound;
Age;
Pregnant women
- From:
Chinese Journal of Medical Imaging
2025;33(1):68-72,90
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To assess the impact of in vitro fertilization-embryo transfer(IVF-ET)technology on early embryonic development by using early pregnancy ultrasound parameters.Materials and Methods A retrospective study was conducted on 864 pregnant women who had their early pregnancy ultrasounds at the Haidian District Maternal and Child Health Hospital in Beijing from 2020 to 2022.These women had singleton viable pregnancies with no adverse pregnancy outcomes followed up to 13+6 weeks.They were divided into two groups,based on their method of conception,including IVF-ET group and spontaneously conceived(SC)group.Subgroups were further divided according to the gestational age indicated by ultrasound at 6,7 and 8 weeks.A longitudinal study of early pregnancy ultrasound indicators was conducted in the IVF-ET group and compared with the corresponding parameters in the SC group.The ages of the pregnant women were stratified to compare the differences in ultrasound indicators between the two conception methods at different ages.Univariate linear regression analysis was used to assess the correlation between crown-rump length(CRL)and mean gestational sac diameter(mGSD).Results The CRL and mGSD of pregnant women in both groups increased with gestational age(P＜0.05),while the mGSD-CRL did not show significant changes with the increase in gestational age(F=83.592-840.037,P＞0.05).There were no statistically significant differences in CRL,mGSD and mGSD-CRL at each gestational week during early pregnancy between the SC group and the IVF-ET group(t=0.282-1.713,P＞0.05).When comparing the ultrasound parameters stratified by maternal age,there were no statistically significant differences in ultrasound parameters between the elderly and non-elderly subgroups within both groups(P＞0.05).There were also no statistically significant differences in ultrasound parameters between the elderly subgroup of the IVF-ET group and the SC group,as well as between the non-elderly subgroup of the IVF-ET group and the SC group(P＞0.05).Univariate linear regression analysis showed a positive correlation between CRL and mGSD in the early pregnancy period for both the IVF-ET group and the SC group(t=3.586,9.665,11.170,7.690,11.307,12.263,P＜0.05).Conclusion During early pregnancy,the gestational sac and embryo exhibit regular synchronous growth,and IVF-ET technology and age do not affect their growth patterns.
