cryopreservation
Sperm Freezing
:
The procedure to preserve sperm cells is known as sperm freezing or sperm banking. It is used for sperm donation where the couple wants to go for IVF at different place or time or in cases wherein there are options for the couple to have children in future too. In males with oligospermia where the sperms are extracted using the technique TESA/TESE the sperms are stored for future purpose so that there is no need to undergo the surgical process again. Sperms from the sperm bank are available for the patients suffering from genetic disorder and Azoospermia.
Egg Freezing/Egg bank
:
Fertility declines
rapidly after the age of 35 in women. Young women can freeze their eggs to have
children in later age or females who have to undergo chemotherapy for cancer
treatment may freeze their eggs before radiation. Menopausal females or those
suffering from some genetic disorders may obtain eggs from the egg bank and can
have children.
Embryo Freezing
:
Preservation of embryos at subzero
temperatures (-196 degree Celsius) is known as embryo freezing or
cryopreservation of embryos. In the process of stimulation in IVF procedure
many embryos are formed and only 2-3 embryos are transferred in the first
cycle. The left over embryos are stored for future purpose. If the couple wants
to have children after the successful completion of first cycle, these can be
used, or if due to some reasons the first cycle fails then these embryos are
utilised in the second cycle. Controlled-rate and slow freezing, also known as
slow programmable freezing is used to avoid extracellular and intracellular ice
formation which is lethal for the health of embryos.
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