Cryopreservation of oocytes (freezing of eggs) is a procedure by which a woman can preserve healthy eggs for a conception that takes place in the future. It is a useful method of increasing or preserving fertility in the long term, similar to the cryopreservation of sperm in men, in which there is the possibility that egg production or ovarian functions may be compromised.
When do you call for oocyte cryopreservation?
There are several situations, but also reasons why women may call for the cryopreservation of oocytes.
In the modern age, most women decide to become mothers at a later age. According to recent statistics, the average age at which women decide to start a family has been around 35 years or more. He prefers first to ensure a decent career and life, before bringing a baby to the world.
Because of this, many women prefer to use cryopreservation to preserve their eggs or oocytes when they know they are capable of producing healthy and healthy ones for 20-25 years. They ensure that this way when they decide to have children they will not have problems with the production or quality of the eggs. I choose the cryogenic ones, to increase the chances of getting the pregnancy.
And women who have cancer and know that they are about to undergo chemotherapy should consider this fertility preservation procedure.
Radiation therapy and the medication used in chemotherapy can alter the functions of the ovaries and the integrity of the eggs and make conception difficult.
If your doctor foresees a bleak future of the functions of the reproductive tract, for medical or biological reasons, it is important to think ahead of time about how you want to become a mother in the future and how you can keep your chances of becoming more likely. she gets pregnant.
How is cryopreservation done and under what conditions?
If you are clinically healthy, your doctor will harvest the eggs or oocytes after you are given ovarian stimulation medication. After one and a half days after the administration of the medicines, the doctor will ask you to come back for the procedure for collecting the oocytes to be cryogenated.
The process by which the oocytes harvest is called follicular puncture. It is performed through the vagina and requires local anesthesia. The doctor accurately explores the area through the images provided by an ultrasound, which is done at the same time as the harvesting takes place. The process takes about 20 minutes.
The oocytes are then stored in liquid nitrogen at -196 degrees Celsius. They can be kept for a very long time, even for years, until you decide to become pregnant.
Afterwards, the oocytes removed from the preservation are fertilized in vitro in the laboratory, with sperm from the partner you choose to become your baby's father.
Insemination of the fertilized egg is done by artificial means, by intrauterine insemination or by another technique, depending on your medical particularities and which method seems most effective to the doctor in charge of you.
The success rate of this procedure is about the same as in vitro fertilization, about 20-25%.
Tags Fertility women In vitro fertilization Assisted human reproduction techniques