Kiran Infertility Centre – Hyderabad
Sai Kiran Hospitals - Unit of Kiran Infertility Centre
Egg Freezing - (Oocyte Cryopreservation)
Fertility Preservation Guide
What is Cryopreservation?
Cryopreservation is a medical procedure used to preserve sperm, eggs, embryos, and other reproductive tissues by freezing them at extremely low temperatures. At KIC Hyderabad, we offer cryopreservation as part of our advanced fertility treatments.
By storing reproductive material in liquid nitrogen at –196°C, we can protect it from damage and preserve its genetic identity for future use. This technique allows patients to safeguard their fertility, enabling conception at a later stage of life.
Why Cryopreservation Matters
- Fertility preservation: Individuals can freeze sperm, eggs, or embryos at a younger age to increase their chances of pregnancy later.
- Medical reasons: Patients undergoing treatments such as chemotherapy or surgery that may impact fertility can preserve reproductive cells in advance.
- Flexibility in treatment: Couples pursuing Assisted Reproductive Technologies (ART) can freeze unused embryos for future attempts.
At these very low temperatures, biological activity and enzymatic processes are minimized, preventing damage. To further protect the material, special solutions called cryoprotectants are used to avoid ice crystal formation during freezing.
Techniques in Cryopreservation
- Sperm Freezing
Sperm can be frozen for future use in IVF or IUI. This provides a reliable backup in case sperm quality declines over time due to age, illness, or other factors. - Oocyte (Egg) Freezing
A valuable option for women who may face conditions affecting ovarian function, such as cancer treatments. Oocyte freezing allows eggs to be preserved independently, avoiding the need for embryo storage if desired. - Embryo Freezing
Couples undergoing IVF can freeze embryos for future use. This offers:- A chance for another pregnancy attempt if the first cycle is unsuccessful.
- The possibility to conceive later in life, even as fertility declines with age.
- The flexibility to thaw and transfer embryos in a more natural cycle, when ready.
The Cryopreservation Process
- Screening: Patients are tested for infectious diseases (such as HIV or hepatitis) and the quality of the sperm, eggs, or embryos is assessed.
- Preparation: A cryoprotectant is added to safeguard the genetic material during freezing.
- Freezing: Two main methods are used:
- Slow Freezing: Gradual cooling before storage at –196°C.
- Vitrification (Fast Freezing): Instant solidification that reduces ice crystal formation and minimizes damage.
Key Benefits
- Preserves fertility potential for future family planning.
- Offers security for patients undergoing medical treatments that affect fertility.
- Provides couples with the option to try again without repeating a full IVF cycle.