While numerous types of commercially available human embryo culture media exist for human blastocyst culture, the impact of culture conditions on blastocyst development and aneuploidy formation is not fully understood. Culture conditions are very important for the success of the in vitro fertilization (IVF) cycle, many of the factors involved in the process have been extensively studied. However, none of the studies investigated the effect on euploid rate in a sibling oocyte design with preimplantation genetic testing for aneuploidy (PGT-A), which requires culture till day 7. In addition, the clinical outcome (implantation) will be investigated in a frozen cycle regimen. Hence, the study will explore which day of media refreshment will result in higher rate of ploidy and would improve clinical outcomes. Investigators aim at exploring the best practice, that would empower the euploid rate through the comparison of refreshing the single-step medium on day 3 or day 5 in a sibling oocyte prospective design.
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blastocyst ploidy
Timeframe: 3 days