Embryo transfer is a crucial step in the process of assisted reproduction and is often used in connection with in vitro fertilization (IVF) treatments. It involves the placement of one or more embryos into the uterus of a female in the hopes of establishing a pregnancy. The embryos can be "fresh," meaning they are from the same menstrual cycle, or "frozen" if they have been generated in a preceding cycle and undergone embryo cryopreservation.
Frozen embryo transfer (FET) has been shown to be effective and is believed to have certain advantages over fresh embryo transfer. When using cryopreserved embryos, there is no increase in birth defects or developmental abnormalities, and perinatal outcomes are generally better. The endometrium is also believed to be better prepared for implantation in a separate cycle following ovarian hyperstimulation.
Embryo transfer can be performed at different stages of embryonic development, including day two or three, or later in the blastocyst stage, which was first performed in 1984. Aashakiran IVF is one example of a clinic that offers embryo transfer as part of their assisted reproductive services.
The success of embryo transfer depends on a variety of factors, including the age and health of the female, the quality of the embryos, and the timing of the transfer. It is important to work closely with a medical team experienced in assisted reproductive technologies to determine the best course of action for each individual case.