FET, also known as Frozen Embryo Transfer is a process in
which frozen embryos from a previous fresh IVF cycle are thawed and transferred
into the woman’s uterus. Healthy embryos produced from an IVF cycle but not
transferred to the patient can be frozen and stored. FET is the most effective
way for women to preserve their fertility.
Women consider FET as an option to avoid the risks, costs
and inconvenience of fertility drugs and undergoing egg collection multiple
times. Patients who had an unsuccessful cycle or ready to expand their family
again will have the FET option waiting for them.
When a couple decides they want to proceed with the FET
cycle, an ultra sound is performed and medications will be given to optimize
the lining of the woman’s uterus for implantation. Estrogen and progesterone
injections will be given for 2-3 weeks and Dr. Sharara will check the uterine
lining before beginning the implantation. Embryo thawing only takes an hour or
so and the quality of the embryos is thoroughly checked for a positive transfer
outcome. Patients will find that going thru the FET process is easier and less
intense than an IVF cycle.
The success rate of an FET cycle is about the same as a
fresh IVF cycle, the fundamental factor for success is the maternal age at the
time of the embryo freezing. Many of our patients wait several years before
going thru the FET process. Rest assured, no matter the amount of time between
embryo freezing and thawing patients can rely on the same embryo quality
because frozen embryos are suspended in time and do not age.
The Virginia Center for Reproductive Medicine Frozen Embryo
Success Rate results for January 1, 2014-June 30, 2014 can be seen here:
The complete Frozen Embryo Transfer Results for 2013 are
shown here:
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