Vitrification Technology – Advanced Cryopreservation Technique
Vitrification is an advanced cryopreservation technique for oocytes and embryos that based on the nature of the cryo-protectants used and an extremely fast cooling rate is able to generate a glass-like state preventing the formation of ice crystals during the process. Once stored in liquid nitrogen (-196 degrees Celsius) the cellular activity is essentially brought to a halt, allowing the oocytes/embryos to remain viable indefinitely. When patients decide to attempt a pregnancy with their cryopreserved oocytes/embryos, a reverse process of thawing will be performed whereby the cryo-protectant will be replaced by water rehydrating the cells.
Who is it for?
- Inappropiate hormonal profile
- Risk of Ovarian Hyper Stimulation Syndrome (OHSS)
- Presence of polyps, hydrosalpinx or hydrometra
- Absence of spermatozoa in the day of the oocyte retrieval
- Patients having surplus good quality embryos besides the embryos selected for embryo transfer Those embryos can be vitrified in order to have extra chances, if required, of having a baby in subsequent embryo transfers without the need to undergo a new stimulation cycle.
A common measure of success is a day 35 ultrasound scan which confirms a foetal heart and viable ongoing pregnancy, referred to as the clinical pregnancy rate. The latest clinical pregnancy rates at our clinic is near about 75 percentage.