Obstetric outcomes following artificial and natural cycle frozen embryo transfer in patients with and without endometriosis: a national cohort study.

ABSTRACT:

Background

Endometriosis is a common cause of infertility in women of reproductive age, and many affected women require assisted reproductive technology (ART) to conceive. It is also associated with increased risks of adverse obstetric complications. However, the impact of different frozen embryo transfer (FET) protocols on outcomes in this population remains unclear. This study aimed to evaluate obstetric outcomes after FET, comparing endometrial preparation methods in women with and without endometriosis using a nationwide cohort from the Republic of Korea.

Methods

We analyzed data from the National Health Insurance Service database (October 2017 to December 2021), including 44,118 singleton pregnancies following in vitro fertilization. The the artificial cycle (AC)-FET an

SUBMITTER: Yu EH 

PROVIDER: S-EPMC12505903 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature