Conception
Updated on 4 January 2023
The right time for having children is a concern for many of those who dream of parenthood. While for some, the right time may not occur until later in life, when fertility decreases naturally. Embryo freezing is a way in which couples can plan the time to have children. The best age to freeze embryo may vary for women and the key time to consider freezing eggs would depend on their life plans.
In this article, we will discuss why some people freeze embryo, the procedure of embryo freezing and the usage of frozen embryo, among more.
Embryo freezing, also known as embryo cryopreservation, is a process in which an embryo is frozen and stored for later use. Embryo freezing is a way to preserve a woman’s eggs to become pregnant at a later point in time. Frozen embryos are eggs that have been fertilised by a sperm, grown for several days and then frozen.
During the treatment, medication is used to increase the number of mature eggs available for harvesting. As the eggs mature, they are removed from a woman’s body, fertilised with sperm and kept as frozen embryos until she is ready for a child. People freeze embryo to assist with fertility and reproduction later. In Vitro Fertilisation (IVF) can be used to ensure a successful pregnancy.
Embryo freezing mostly occurs after people opt for treatments like In Vitro Fertilisation (IVF) or Intracytoplasmic sperm injection (ICSI) to get pregnant. In these cases, there might be some good-quality embryos left that the couple may want to save in case the treatment doesn’t work or they want to try for another baby.
People who are undergoing hormone therapy, cancer treatment, gender transition surgery or any other medical intervention that may affect their fertility may also want to freeze embryo to preserve future fertility.
The decision to freeze embryo is a personal choice. The cost of the procedure varies widely and your medical insurance may not cover fertility treatments. You must consider your goals, medical costs, ethical concerns and your partner’s preferences, among other considerations.
You may want to consider freezing your embryos if:
You wish to have the option of using your embryos in the future
You have to postpone your fertility treatment to a late date.
You have a medical condition or are undergoing medical treatment that may affect your fertility.
Embryo freezing can help people have a baby later in life. When frozen embryos are needed later in life, a fertility specialist will use the embryos as desired and transfer them to the woman’s uterus. Freezing embryos doesn’t pose risks like congenital disabilities, premature birth, low birth weight or fetal health problems to the resulting pregnancy.
The frozen embryos are transferred to the woman’s uterus, also known as frozen embryo transfer (FET). When the prospective mother’s uterus is ready for the transfer, the doctor inserts a catheter through the vagina and into the cervix and into the uterus to inject the embryo. The embryo is transferred into the uterus usually five days after ovulation. Ten days after the embryo transfer, a blood pregnancy test can help confirm if the procedure was successful and resulted in pregnancy.
You can freeze embryo and store the frozen embryos for up to 10 years before using them in fertility treatment. The frozen embryos are not compromised in quality and remain good for use even after years of being stored.
Before the embryo freezing procedure is carried out, you’ll be required to sign relevant consent forms which will state the terms for future use. The consent form will determine how long you want the embryos to be stored, what happens to the frozen embryos if you were to die or become unable to make decisions, whether the frozen embryos can be donated for someone else’s treatment and any other conditions for the use of the frozen embryos.
Before starting a cycle for retrieving eggs to create embryos, your doctor will check your hormone levels and perform an ultrasound to make sure your ovaries are ready for the procedure. You will then be given injectable medications to stimulate the ovaries to grow multiple follicles, where the eggs grow and can easily be harvested from.
In case, you don’t renew your consent to store your frozen embryos at the right time, they will be removed from storage and disposed of. Your clinic or storage facility might ask you before disposing of the frozen eggs.
It’s important to keep your contact information updated with the clinic so that they can inform you about your consent to storage or if it needs to be renewed. If the clinic is unable to contact you or obtain your consent for storage renewal, then your frozen embryos will be removed from storage and disposed of.
You, your partner or the donor can withdraw or change their consent at any time before using the frozen embryos. If you or your partner withdraw their consent, then the frozen embryos can no longer be used in treatment. If one person withdraws the consent, there might be a cooling-off period of up to a year. If you or your partner still don’t want the embryos, then they will be removed from storage.
Treatments that utilise frozen embryos such as IVF are risk-free and have been producing higher success rates each year. The success rates vary based on factors like the expecting parents’ health, the mother’s age at the time of retrieving eggs, the presence of any fertility issues and/or previous success or failure of fertility treatment and pregnancy.
Embryo freezing may cause damage to the embryos. Thawing the frozen embryos may also damage them. If there are multiple frozen embryos, then some or all may not survive. Your doctor will inform you whether your embryos are suitable for freezing, thawing and implantation.
Embryo freezing involves several costs such as the initial hormone treatments, egg harvesting, fertility, embryo culture, freezing, storage and implantation. The egg retrieval and embryo freezing procedure can cost Rs. 50,000 to Rs. 1,00,000 in India. Some medical insurance covers assisted reproduction techniques including embryo freezing while others may not.
When the frozen embryos are needed later for use, a fertility specialist will:
Remove the frozen embryos from liquid nitrogen
Allow the embryos to return to normal temperature
Soak them to remove the cryoprotective agent (CPA)
Use the embryos as required, for example, transfer them into the uterus
If you don’t use your frozen embryos or there are some remaining after the treatment, you can:
Dispose of them
Donate them to someone else trying to have a baby
Donate them for research or educational purposes
If you are considering delaying family planning, you can opt for the embryo freezing procedure and preserve your fertility for the future.
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Written by
Ravish Goyal
Official account of Mylo Editor
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