Main Findings
In this retrospective study, the results demonstrated long post-thawed
culture could be causing a significant increase in the IR, CPR, MPR and
LBR. Then transferred embryos with more blastomere growth had a higher
IR, CPR, MPR and LBR. The study also indicated that the neonatal
characteristics between L and S groups were similar, and the twin group
had a lower average gestational age and birthweight as well as a higher
cesarean section rate, preterm labor rate and low birthweight rate than
the singleton group.