The risk of birth defects among children born after vitrified blastocyst transfers and those born after fresh and vitrified cleavage-stage embryo transfers

ConclusionsTransfer of vitrified day 5 or 6 blastocysts does not increase the risk of birth defects compared with vitrified day 3 embryos. However, randomized control trials and follow-up studies of the long-term outcome of children born after blastocyst-stage transfers are needed to confirm the clinical safety of extending embryo culture to the blastocyst stage.

Source: Archives of Gynecology and Obstetrics - September 15, 2018 Category: OBGYN Source Type: research