Conventional medicine plays an important role and most of the time is
the first treatment for a couple who for what ever reason cam not
conceive after 1 year of unprotected sexual intercourse or can not carry
the pregnancy to full term. Artificial insemination is defined as
placing sperm of the male partner by using medical advance technological
instrument into the female reproductive tract through a method other
than sexual intercourse. It is used when the male partner is diagnosed
with low sperm count and motility or when a woman is diagnosed with
ovulation or cervical mucus problems. In this article, we will discuss
definition, procedure and risks of cryopreservation.
1. Definition
In
fertility, cryopreservation is technique or process where sperm, embryo
or unfertilized eggs are frozen and preserved in a liquid nitrogen at
very low temperature between 77 K or −196 °C
2. What is cryopreservation ?
a) Freezing sperm
After
sperm are withdrawn from the testicle,it is stored in the tube and
stored in -80ºC for at least 24 hours. Once completely frozen, the
tubes containing sperm is transferred into a regular tube rack for long
term storage.
b)Freezing embryo
It is possible to freeze and
store embryos in liquid nitrogen at very low temperature. Frozen embryos
are stored in embryos bank and only available for legally married
couple. The cost of storing embryos are low compare to other treatments
and 50% of embryos survive thawing and can be transferred into a woman
uterus whenever are needed.
c) Freezing eggs
The technique of
egg freezing is still in experience stage because freezing and thawing
the eggs may damage the outer layer of the eggs and no body know how
long they can be stored for a viable pregnancy.
3. Risk
Some of frozen sperm, embryo and unfertilized eggs may be damaged and can not be used when needed
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