Not exact matches
Worth noticing is that his public argument is about the consequences of assisted reproductive technologies, how they
result in
embryo killing,
freezing, and other abuses.
The overall pattern may be that the better uterine environment in
frozen embryo cycles is more receptive and not only increases the chance of an
embryo implanting, but also improves the quality of implantation
resulting in better fetal growth.
The
embryos are then
frozen since it takes 10 - 14 days to get the genetic report
results back to us.
The study is in progress, so Dr. Sharara will now examine the
results and determine why this trend emerged, and whether
frozen embryo transfer (rather than fresh) will improve outcomes.
Couples will no insurance coverage pay a set fee that will cover up to 4 fresh Donor Egg cycles, and their
resulting frozen embryo transfers (plus a non-refundable fee of $ 10,500 Donor cost per fresh cycle).
In
results to be published this week in The New England Journal of Medicine, the research team shows that ongoing pregnancy rates and live births were equivalent in a group of IVF women implanted with
frozen embryos compared with fresh
embryos.
Dr Vuong says: «Our research
results are specific to a common
freezing method known as Cryotech vitrification, so it may not apply to all
embryo freezing techniques currently being used.
Professor Mol says that while many clinics are moving completely away from fresh
embryo transfers, the
freezing process adds additional costs in IVF and does not
result in higher rates of live births.
«
Frozen embryos result in just as many live births in IVF.»
Because fertilized human
embryos are far more accessible than unfertilized eggs, which can not be
frozen and stored, extending the
result to humans could lower the practical barriers against creating human embryonic stem cells to study and potentially treat disease.
Researchers suspect the health risks could arise from the treatments themselves, perhaps from drugs used to trigger ovulation or from changes that occur as a
result of
freezing and thawing
embryos.
The process
results in a human
embryo which can then be implanted in a mother's womb to develop to birth,
frozen for later transfer to a mother, or discarded or used for research purposes (and then destroyed).
Previous research from the team showed that using
frozen embryos resulted in more live births among women with polycystic ovarian syndrome — women who do not ovulate normally — but the researchers said not as much was known about using fresh versus
frozen embryos in women who do ovulate normally.
The researchers also found that using
frozen embryos resulted in a lower risk of the woman developing ovarian hyperstimulation syndrome, a condition that sometimes affects women undergoing fertility treatment.