Multiple freeze thaw cycles negatively impact pregnancy outcomes: a comparison of euploid blastocysts that underwent two freeze/thaw cycles vs. one freeze/thaw cycle prior to embryo transfer

Comparison of Pregnancy and Neonatal Outcomes in Frozen and Fresh Embryo Transfer in ART Cycles: A Retrospective Cohort Study

Background & aim: In addition to the benefits of frozen embryo transfer (FET), the key question is whether freezing or melting embryos can cause fetal harm and prenatal complications. This study aimed to assess pregnancy and neonatal outcomes after FET and fresh embryo transfer (ET). Methods: This retrospective ...

Comparison of Easy and Difficult Embryo Transfer Outcomes in In Vitro Fertilization Cycles

Two cycles with single embryo transfer versus one cycle with double embryo transfer: a randomized controlled trial.

BACKGROUND With the aim of reducing the number of multiple pregnancies after IVF we investigated the effectiveness of two cycles with single embryo transfer (SET) and one cycle with double embryo transfer (DET) after IVF and calculated the cost-effectiveness of both strategies. METHODS A randomized controlled trial was performed in 107 women, aged <35 years, in their first IVF cycle, with at ...

Effects of Multiple Freeze/Thaw Cycles on Measurements of Potential Novel Biomarkers Associated With Adverse Pregnancy Outcomes

World-wide, millions of women enter preterm labor or have small newborns. Effective biomarkers are needed to identify women at risk for these adverse outcomes. A time and cost effective way to examine any potentially new biomarkers in samples collected during prior studies or trials that had been assayed for other metabolites would be highly useful. Thus, the current study aimed to determine if...

Factors that Influence The Occurrence of Multiple Pregnancies after Intracytoplasmic Injection Cycles with Two or Three Fresh Embryo Transfers

Background One of the important complications of assisted reproductive technologies is multiple pregnancy, the aim of the present study was to indentify the risk factors of multiple pregnancy independent of number of transfred embryos. MaterialsAndMethods This retrospective study reviewed the medical records of patients underwent intracytoplasmic sperm injection (ICSI) cycle in Royan Institute ...