1, basic physical examination
Physical examination is very necessary. Through the doctor's examination, you can know your ovary, know the number of ovarian eggs, judge how many eggs can be used for cryopreservation, and meet your own requirements for cryopreservation of oocytes according to your own needs.
2. Drugs promote ovulation
Ovulation promotion is a very important link, which is related to the quantity and quality of eggs and the success of oocyte cryopreservation.
Ovulation promotion usually begins with hormone drugs that promote follicular growth during menstrual cycle, including injection, oral administration, regular hormone and follicular monitoring. Doctors can flexibly adjust the dosage and time according to the follicular development.
This ovulation induction technology in the United States now uses micro-stimulation ovulation induction technology, which can reduce the occurrence of ovarian stimulation syndrome and reduce the harm to the body.
3. Follicles get eggs
After the second ovulation induction step 10 to 14 days above, the eggs were taken. Under the monitoring of B-ultrasound, an ultrasound-guided needle will be used to puncture the vagina to take eggs, of course, under anesthesia. This process takes about 30 minutes. Don't worry, the risk of this operation is very small, and there is not much discomfort after the operation. The individual has a slight swelling pain for about a week.
4. Cryopreservation of oocytes.
Here comes the key technology. The freezing of eggs is much more complicated than sperm freezing, because the water contained in eggs will crystallize because of freezing, and crystallization will destroy the molecular structure. The vitrification quick freezing technology is about 20 thousand times faster than the original slow freezing technology, and it is too late to form ice crystals at this speed. In addition, under the guarantee of advanced laboratory equipment in the United States, the recovery rate of egg freezing operation is over 90%, and the storage time can be as long as 10 year.
In addition, if you are in oocyte cryopreservation, you don't need to provide complicated documents. As long as you get an American visa, you can go to oocyte cryopreservation.
There is also the follow-up cost of storage every year, hundreds to thousands of dollars a year. Generally, the first year is free, which is included in the package fee of egg retrieval operation. It is recommended not to exceed ten years. After all, it will affect eggs in the long run.
Second, some problems in oocyte cryopreservation, USA
The above processes and advantages, here are some questions to understand.
1, age range of frozen eggs
The data show that the quality of eggs will decline with age, especially for women after 35 years old, especially after 40 years old. Therefore, fertility experts in the United States suggest that the age should not exceed 42, so the frozen eggs should be young, and the young eggs have stronger endurance and thawing ability, which reduces the risk and improves the chances of pregnancy in the future.
2. Will taking a large number of eggs lead to premature exhaustion of eggs?
Speaking of this issue, it is another cognitive misunderstanding. In fact, women have 10 to 20 oogonia every month, one of which will eventually mature and the others will eventually go to apoptosis.
As long as we follow the law of women's ovulation cycle, but take eggs by weight, there will be no problem of premature failure.
3. Preservation time of oocyte cryopreservation
Early slow freezing technology can still be used for pregnancy and delivery after storage for 10 years. Now using more advanced vitrification technology, the preservation time will definitely be longer, and the success rate after recovery will be much higher.
Of course, indefinite cryopreservation is not recommended, and it needs to be revived at an appropriate time to carry out the pregnancy process. After all, it takes a long time to accompany your baby to grow up. Maybe you had a baby before freezing your eggs, and it's embarrassing for your grandson to call his uncle with his youngest son in his arms.
4. Will oocyte cryopreservation lead to early menopause?
This involves a cognitive problem of drug abuse. The drugs used in oocyte cryopreservation to induce ovulation in the United States are basically the same as the hormones produced by women themselves. The drug has high purity and little side effect, and it is slightly irritating to ovary in a moderate range. The use of substances consistent with their own hormones will not bring negative effects to the body under the premise of moderate use. At present, there is no medical evidence that it will lead to the early arrival of menopause.
5. Is the success rate of resuscitation related to freezing technology?
Yes, it is. This is closely related. Of course, the success of resuscitation is also closely related to the quality of eggs. That is, as mentioned in the last article, oocyte cryopreservation should also be young.