Comparison of clinical outcomes for different morphological scores of D5 and D6 blastocysts in the frozen-thawed cycle.

ABSTRACT:

Background

Both embryo development speed and embryo morphology score played a significant role in frozen-thawed embryo transfer cycle (FET) outcomes. Most of the literature indicates that D5 embryos performed better than D6 embryos, although a few also indicate that there is no difference in clinical outcomes between D5 and D6 embryos. Clinically, D5 embryos are preferred for equal morphological scores. But how to choose embryos when the morphological score of D6 embryos is better than D5?

Methods

A retrospective study including 8199 frozen-thawed embryo transfers (FETs) was conducted to analyze patients who underwent IVF-FET from January 2018 to December 2020. Patients were divided into 8 groups according to the rate of embryonic development and morphological scores to comp

SUBMITTER: Jiang Y 

PROVIDER: S-EPMC9900991 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature