Freeze the fetus(embryo)
If the number of eggs is high and leads to the production of multiple embryos, or for reasons such as inadequate uterus, the possibility of hyperstimulation syndrome, or in cases where chemotherapy and radiotherapy should be performed (in cancers), embryos for couples They are frozen to be used in the future if pregnancy does not occur.
The embryo freezing process is a process of about 3 hours. In this method, the embryos are placed in straw-holding solutions for embryos, then the straws containing the embryos are placed in the embryo freezer and quickly frozen using liquid nitrogen. Then these embryos are immersed in liquid nitrogen to negative. 196 ° C can be stored for a long time.
Note that good quality embryos are frozen because only these embryos can withstand the stress freezing process well.
The embryo freezing process does not seem to harm them, but it takes longer and more time to prove it.
The chance of pregnancy following the transfer of frozen embryos is only slightly less than the chance of pregnancy following the transfer of fresh embryos, but it still depends on the number and quality of frozen embryos.
This chance of freezing embryo transfer success is estimated at about 10 to 40% per transfer time, which depends on different conditions.
How long can embryos be stored in the freezer?
There is no set time. So far, there is a 13-year record that has led to the birth of a healthy baby. In general, keeping the fetus in the freezer for more than 10 years is not recommended.
Precautions before transfer of frozen embryos:
The referral time to prepare the patient for the transfer of frozen embryos is at least two months after ovulation, one week before menstruation or finally until the first day of menstruation.
At this time, the patient undergoes ultrasound and if the condition of the ovaries, uterus and endometrium is favorable and there is no infection, he is treated with estrogenic compounds to prepare the uterus for fetal acceptance. The patient undergoes ultrasound again around the thirteenth or fourteenth menstrual cycle and if the condition of the uterus and endometrium is suitable for implantation of the fetus, he is treated with estrogen and progesterone compounds (both) and the time of embryo transfer will be determined for him.
Fetal Transfer Day Attention:
* On the day of the embryo transfer, the patient comes with his wife and files.
* After waiting for the frozen embryos to return to laboratory temperature, the patient is sent to the operating room.
* In the operating room, the patient is placed on an examination bed and an examination device is placed for him, and the embryos are transferred to the patient's uterus with special catheters.
* After half an hour of rest in the operating room, the patient is sent to the inpatient ward and then discharged.
The following points should be observed by the patient after embryo transfer:
- Continue all medications according to the previous procedure, be careful not to add or discontinue the medication arbitrarily (discontinuation or addition of medication should only be with the knowledge and supervision of your doctor and medical staff.)
- Pregnancy blood test should be performed 15 to 17 days after embryo transfer.
- If the pregnancy test is negative, repeat the pregnancy test 48 hours later. If the second test is negative, discontinue the medication with the advice of your doctor or medical staff.
- If the pregnancy test is positive, do not stop taking the medication, continue the medication as before, and inform your doctor or medical staff as soon as possible for further guidance.
- Have a relative rest for up to 3 days after embryo transfer. This means that you can do light work but avoid heavy work. (Note that there is no need for absolute rest, use of a wheelchair for movement or a pelvis and toilet for defecation.)
- Avoid lifting or pushing heavy objects and heavy exercise.
- Do not get married for seventeen days after the transfer of the fetus (until the pregnancy status is determined).
- After the embryo transfer, bathing is allowed.
- There is no special diet after embryo transfer and you are allowed to eat all foods, but try to eat fruits, fresh vegetables and laxatives to prevent constipation (which is common after embryo transfer). .
- After embryo transfer, the use of the Iranian toilet is unrestricted.
- After the embryo transfer, sleeping and resting in a certain position (for example, placing the legs above the body) is not recommended. Sleeping and resting in any situation is unobstructed.
- After the transfer of the fetus, in case of any problems such as spotting, bleeding, abdominal pain, shortness of breath, inform your medical staff or physician.
- Avoid contact with patients with the flu or cold.