Transfers of lower quality embryos based on morphological appearance result in appreciable live birth rates: a Canadian center's experience.

ABSTRACT:

Objective

To determine the reproductive outcomes resulting from transfer of lower-grade blastocysts to support the practice of cryopreserving and transferring lower-grade embryos.

Design

Retrospective chart review.

Setting

Single infertility center.

Patients

Women who have undergone a fresh (n = 570) or frozen (n = 885) transfer of a single blastocyst embryo between December 2013 and December 2018.

Interventions

None.

Main outcome measures

The primary outcome was live birth rate. The secondary outcomes included implantation rate, ongoing pregnancy rate, associations with inner cell mass (ICM) and trophectoderm epithelium (TE) grades determined by morphological assessment, and antenatal/perinatal complications.

Results

Reproductive outcomes

SUBMITTER: Lai I 

PROVIDER: S-EPMC8244281 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature