Cryopreservation of embryos is the process of preserving an embryo at sub-zero temperatures, generally at an embryogenesis stage corresponding to pre-implantation, that is, from fertilisation to the blastocyst stage. It is useful for left over embryos after a cycle of In-Vitro Fertilisation, as patients who fail to conceive may become pregnant using such embryos without having to go through a full IVF cycle.
Indications of Oocyte Preservation:
- Prevent Ovarian Hyperstimulation Syndrome (OHSS).
- It’s a logical way for patients to have repeated attempts at conception following a single drug stimulation cycle.
- Embryo donation to another woman or a couple.
- Storage of embryos from a cycle allows the patient to space the timing of sibling pregnancies and improve their potential to achieve at an advanced maternal age.