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Frozen embryo transfers fail to deliver any improvement during IVF process


25th June 2019

Reports emerged from the large-scale European trial showed that the frozen embryo transfers fail to boost in vitro fertilization (IVF) process over the fresh transfers.

460 patients were randomly assigned either a freeze-all process with a frozen embryo transfer in a subsequent cycle or a fresh transfer and were observed by the researchers at 8 IVF clinics across Sweden, Spain and Denmark.

The statistical data obtained for both groups showed that there will be no significant benefit in pregnancy outcome using freeze-all policy because conception in patients after transfers was something similar in both groups- 26% in freeze-all group and 29% in fresh transfer group. Frozen embryo transfers are recommended by fertility clinics because sometimes the uterus may be less receptive to implantation when fresh transfers are used. Initially frozen embryos transfer technique was conceived for the safety of women but now this process is used more than the fresh transfers.

The researchers after seeing the trial results concluded that the freeze-all policy is only beneficial for the patients suffering from polycystic ovary syndrome. Otherwise, both freeze-all and fresh transfers process show same effect in women with regular cycles.


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