The Technique of Frozen Embryo Transfer Procedure and Embryo Transfer Benefits

Added: 01/03/2006

Artificial fertilization is one of the most perspective reproductive techniques. Technology of preparation of a woman to artificial fertilization is complex enough. The period of preparation for procedure of artificial fertilization takes some weeks. However, the technology and a degree of complexity of artificial fertilization procedure get out the doctor and the patient in accordance with the diagnosis. In some cases, the period of preparation and carrying out of procedure takes more than one year.

The preparatory stage of artificial fertilization consists of carrying out of the hormonal therapy program. The circuit reception of preparations is appointed individually. Hormonal therapy is aimed at activization of process super-ovulation. At super-ovulation ovaries of women produce some follicles. As a result little ootids are formed. In case if that primary attempt of artificial fertilization was unsuccessful, superfluous ootids are used which have been received at super-ovulation. However, if the first fertilization has been led safely and the embryo was implanted into the uterus, superfluous embryos can be frozen. This process is carried out with the help of technology of cryogenic preservation.

The frozen embryos can be kept for a long enough time, not losing own viability. Some embryos keep viability more than 10 years. The frozen embryos can be used for secondary artificial fertilization when the woman wants to have secondary pregnancy. Besides at the request of the woman-donor, her frozen embryos can be used for implantation in the uterus of infertile pations.

There is a plenty of pathologies of female reproductive system at which the produce of normal ootids or development of normal embryos is impossible. In this case infertile patients are recommended to take advantage of donor ootids or frozen donor embryos. The procedure of frozen embryo transfer in the cavity of the uterus is rather complex. However, due to this technology many women could become pregnant and give birth to the child. To number of basic embryo transfer benefits it is possible to attribute that the given technology enables to become pregnant women, having very serious pathologies of female reproductive system.

Embryo transfer benefits in case of full or partial absence of ovaries, at dysfunction of ovaries, impassability of uterine pipes or infringement work of endocrine system. At use of the given technology pregnancy is possible even at presence of serious hereditary chromosomal defects. The technique of frozen embryos transfer is constantly improved. The modern technology is effective enough and embryo transfer benefits in 25 % of cases. However, there are the specific conditions necessary for increasing efficiency of the procedure of frozen embryo transfer.

To numerous scientific researches it is proven that at freezing an embryo, an external protective coating of a germ considerably thickens. Germs with thicken external coating are implanted in the uterus unsatisfactorily. Therefore, embryo transfer benefits in the event that before implantation of embryo the auxiliary notch of an external coating of germ is carried out. The given procedure refers to auxiliary hatching.

Carrying out of auxiliary hatching increases the efficiency of implantation of an embryo in the cavity of the uterus by 45-60 %. Besides for increasing of embryo transfer benefits the frozen embryos should be kept under constant thermal conditions. Fluctuation of the temperature mode has an adverse effect on viability of embryos.

The proof of embryo transfer benefits is that many women, who have become pregnant with the help of technology of the frozen embryo transfer, want to take advantage of a given technique for secondary pregnancy.

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