Oocyte vitrification
What is the oocyte vitrification?
Vitrification is the process of extracting, freezing and storing gametes. This technique is used to preserve fertility. It allows patients' reproductive capacity to be delayed and patients not to lose their reproductive ability over the years.
When is it recommended to?
- To women who, for some reason, want to postpone motherhood.
- Cancer patients or others who will receive gonadotoxic treatments.
- Women who have had repeated ovarian surgery, for example: in the case of endometriosis.
- In women who are at risk of OHSS, polyp development, hydrosalpinx, and are not currently planning a pregnancy
Results
The advantage of vitrification as a method of cryopreservation, unlike traditional, slow freezing, is to avoid the formation of ice crystals in the cytoplasm of the cell, which can damage the egg cell, and are not formed by this technique.
Stress caused by crypreservation of oocytes is minimized, high rate of rapid recovery and establishment of metabolic processes after thaw up / embryo warming.
Procedure
Germ cell cryopreservation is a process in which eggs are treated with cryoprotective substances and immersed in liquid nitrogen at a temperature of -196 ° C. The steps are the same as in the IVF cycle: stimulation of the ovaries with hormones followed by oocyte aspiration.
Oocytes can be kept cryopreserved for as long as the patient wants or needs them, ie there is no time limit for their storage.
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