Retrospective comparison of pregnancy outcomes of fresh and frozen-warmed single blastocyst transfer: a 5-year single-center experience.

ABSTRACT:

Purpose

To assess whether live birth rates (LBR) and maternal/neonatal complications differed following single fresh and frozen-warmed blastocyst transfer.

Methods

The present retrospective observational study analyzed 4,613 single embryo transfers (SET) (646 fresh and 3,967 frozen) from January 1, 2014, to December 31, 2018. Fresh embryo transfer at blastocyst stage was considered according to the age of the patient and her prognosis. In case of the risk of ovarian hyperstimulation syndrome, premature progesterone rise, non-optimal endometrial growth, or supernumerary embryos, cryopreservation with subsequent frozen embryo transfer (FET) was indicated.

Results

No differences in LBR were recorded. Fresh embryo transfers yielded an increase both in neonatal complicatio

SUBMITTER: Cirillo F 

PROVIDER: S-EPMC8866619 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature