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14 March 2017

All You Need To Know About Embryo Freezing

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Written by Dr. Srilatha Gorthi
Embryos are frozen at any stage during IVF procedure or IVF treatment. Embryos can develop for many days before freezing during the test tube baby procedure.

Embryos are frozen at any stage during IVF procedure or IVF treatment. Embryos can develop for many days before freezing during the test tube baby procedure.

Embryo freezing is simply when the eggs are fertilized with sperm from a male partner or sperm donor prior to freezing. Any normal remaining embryos after IVF, IVF treatment, IVF procedure or test tube baby may also be frozen for implantation at a later time. 

Embryo freezing (cryopreservation) is a process for preserving the viability of embryos and be carefully cooling them to low temperatures (- 196oC). This is done in the laboratory utilizing specific freezing equipment and the embryos can then be securely put in the fluid nitrogen for augmented periods.

What is the embryo freezing process?

Embryos can be frozen at any phase of advancement amid the IVF procedure. Any normal remaining embryos after IVF, IVF treatment, IVF procedure or test tube baby may also be frozen for implantation at a later time.  Eggs that are fertilized can be solidified as early as 1 day after an egg recovery procedure, yet it is more typical to permit embryos to develop for various days before freezing them.

What are the benefits of Embryo Freezing?

The fundamental advantage of embryo freezing is the choice to have frozen embryos thawed and inserted to the woman's uterus later on without undergoing stimulation of the ovaries or egg recovery. Any normal remaining embryos after IVF, IVF treatment, IVF procedure or test tube baby may also be frozen for implantation at a later time.  It is additionally conceivable that there might be sufficiently frozen embryos for more than one subsequent cycle.

What are the disadvantages to embryo freezing?

Around 70% of the embryos that are frozen will survive the defrosting procedure. This does, however, shift amongst patients and it is conceivable that none of the couple's embryos will survive the freezing and defrosting process.

What does the frozen embryo transfer cycle actually involve?

Frozen embryo transfer cycles are relatively simple and basic. Sometimes, the woman's natural cycle will be checked by ultrasound to assess the development of the lining of the uterus and to determine the timing of ovulation and henceforth embryo transfer procedure starts. In different cases, contingent upon the woman's history and all the more hormonally controlled cycle may be warranted. Any normal remaining embryos after IVF, IVF treatment, IVF procedure or test tube baby may also be frozen for implantation at a later time. The choice in regards to the most fitting treatment will be made in meeting with the respected doctor.

When to go for Embryo Freezing?

The couples having infertility problems go for embryo freezing for future pregnancies. The pregnancy rates associated with replacing frozen embryos depend on the age of the patient and the quality of the embryos at the time of cryopreservation. Top-quality embryos from young patients may yield higher pregnancy rates that may exceed 50%, whereas poor-quality embryos may not even survive the defrosting process. In some clinics, more than 70% of embryos survive the defrosting cycle.

Do frozen embryos works after a couple of years?

Through a series of carefully orchestrated steps, the embryos are ultimately frozen at a temperature of –196 C, leaving them in a state of suspended animation in which they can remain for many years. Any normal remaining embryos after IVF, IVF treatment, IVF procedure or test tube baby may also be frozen for implantation at a later time.  Embryos that have been put away for over 10 years have effectively created pregnancies (albeit most patients tend to utilize their frozen fetuses inside 3 to 5 years after they are produced).

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