With increasing advances in technology , the advancement of human reproductive technology also increases ahead . Currently alternative to having a child is no longer impossible . Through IVF technology spouses may have children . The following discussion .
For many years scientists have weighed the question of how to help the wives are barren because of the fallopian tubes or oviducts clogged . When the egg is normally produced every month , none were able menerusi the channel , so it will never meet the sperm - sperm coming from the opposite direction . Although sperm was small and moved with incredible speed , but remains blocked , although the occlusion is only at the end of the channel .
Thus the only way to overcome this problem with the operation aimed at removing all barriers . The presence of a new technique , micro surgery by means of a special catheter to eliminate the barrier seems to augur well , but the opportunity to remain pregnant is still not adequate .
Because it takes a new approach that is expected to resolve the problems. In connection with this, an important question is : can the wife egg united with the husband's sperm cells outside the body ( in vitro ) and then put it back in the womb ? Could the fertilized egg cell that survive and grow for a while in a petri dish before being transferred to its proper place ? conditions that meet both of these questions is a prerequisite to the IVF technology .
IVF Procedure
To achieve the above objectives , some important steps have to be met first . Previous experiments on animals proved that fertilization outside the body is not easy . Obtain nutrients suitable for a medium where the development of the fertilized egg cell requires a very thorough process . And of course the most difficult is how and when to embed a zygote or fertilized egg back into the mother's womb .
In summary the four main steps of making test-tube babies are :
1 . Provides a mature egg
2 . collecting sperm
3 . fertilization
4 . Embryo transfer into the uterus .
The first step is very important in IVF technology is how to get the eggs are ready to be fertilized marang and in vitro . For that , women who had examined the state of her ovaries determined by ultrasound technique is a diagnostic technique that uses sound waves to produce a picture of body tissues and in the circumstances in this case the ovaries . This technique serves to help mengerahui number and size of eggs follikel or will , prior to the withdrawal process starts the egg .
Retrieval techniques and egg collection is done by Laparospkopi . The operation is performed with a small incision in the abdomen and laparospkop included . Laparoscope is specially shaped metal tool that has an optical length such that it can be used to look directly into the ovary . then the egg cells that look like bumps on the surface of the ovary is taken with a special vacuum .
Egg cells that have been obtained are then dimasukksan role in culture and placed in an incubator . Incubator serves to control the environmental conditions such as temperature , humidity , and cleanliness of the surface , in order to achieve optimum liingkungan that egg cells remain mature as when ovilasi . When everything goes smoothly , then the egg is ready to be used in the in vitro fertilization process .
collecting sperm
Approximately two hours before the laparoscopic technique is done , her husband has been collecting samples of the sperm , is usually performed by means of masturbation . For the sake of seeking sperm count sufficient for fertilization , it is suggested that do not experience ejaculation for several days earlier . then washed sperm were obtained and dissolved in a particular substance in order to equalize the situation in the human fallopian tube .
fertilization
Approximately 50,000 sperm are placed together with the egg in a petri dish . Petri dishes were then put in an incubator with expectations , there will successfully penetrate the sperm cell and an egg .
A few hours after the sperm cells and egg cells are combined , fertilisasipun underway . This tiny zygote must dimasukksan in medium quality and kwantitasnya support embryonic growth . Fertilization results in cell division continued to be observed until the blastocyst stage of development , where he sat is moved and grafted to the role in the womb .
Embryo transfer
Transplantation of the embryo into the uterine wall is the work of the most difficult and risky . The timing of embryo transfer should be appropriate development of the endometrial lining of the mother 's womb , and to help smooth out this procedure , often the mother is given an injection of hormones to prepare the uterine lining will receive transplanted embryos .
First - rama embryo catheter inserted into a smooth and slowly inserted through the mouth of the womb ( cervix ) and released near the wall of the uterus where the embryo is anchored to grow . Embryo transfer method through the door of the uterus is known as tran - cervical .
0 komentar:
Post a Comment