Fertility Preservation Through Egg Freezing

Oocyte cryopreservation, commonly referred to as egg freezing, is a medical procedure used to preserve unfertilized oocytes for future reproductive use. It is evaluated for individuals seeking elective fertility preservation or those undergoing medical treatments, such as gonadotoxic therapy for oncology conditions or surgery for severe endometriosis, that may impact ovarian reserve.

The process involves controlled ovarian stimulation using hormonal medications to induce multi-follicular development. Mature oocytes are subsequently retrieved via transvaginal ultrasound-guided aspiration. The retrieved oocytes are cryopreserved using vitrification, an ultra-rapid freezing technique designed to minimize intracellular ice crystal formation during storage.

Egg freezing serves as an established medical option for both elective fertility preservation and medical indications where future ovarian function may be compromised.

When the individual chooses to utilize cryopreserved oocytes, the eggs are thawed and inseminated via intracytoplasmic sperm injection (ICSI) or standard in vitro fertilization (IVF) methods using partner or donor sperm. Developed embryos may then be evaluated for transfer into the uterine cavity. Oocyte survival following thawing, fertilization rates, and pregnancy outcomes depend on multiple clinical factors, including age at the time of cryopreservation and individual egg quality.