期刊
FRONTIERS IN ENDOCRINOLOGY
卷 14, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fendo.2023.1233685
关键词
oestrogen; artificial cycle; pregnancy; embryo transfer; in vitro fertilization
This study retrospectively analyzed clinical results in artificial cycles over the past five years to evaluate the impact of estrogen exposure duration on reproductive outcomes and to determine if there is an optimal duration of estrogen exposure for maximizing success rates. The results suggest that the length of estrogen exposure does not affect clinical outcomes.
IntroductionOptimal duration of oestrogen exposure before an embryo transfer in artificial cycles has not been defined yet, as its correlation with reproductive outcome remains controversial. The length of oestrogen treatment before starting luteal phase support varies significantly among patients. Materials and methodsIn this study, we conducted a retrospective analysis of a huge database of our own clinical results in artificial cycles in the past five years. The aim of this study was to assess the effect of the length of estrogen exposure on reproductive outcome and to evaluate if there is any optimal duration of estrogen exposure in order to maximize success rates. ResultsDifferences in pregnancy rates according to oestrogen length, if present, were not clinically relevant. DiscussionOur results suggest that the length of oestrogen exposure (in days) before exogenous progesterone administration do not affect clinical outcomes.
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