Synchronization of donor's and recipient's cycles with GnRH analogues in an oocyte donation programme.

In this oocyte donation programme nine female donors were stimulated using a combination of GnRH analogues and human menopausal gonadotrophins. A total of 149 oocytes were retrieved. Thirty fresh embryos were transferred in 14 uterine replacements, resulting in four pregnancies and 15 fertilized oocytes were placed in the Fallopian tube of six recipients, yielding two pregnancies. A mean number of 2.2 embryos was replaced. The implantation rate per embryo was 13%. Furthermore 36 embryos were cryopreserved for later use. Following 20 replacements, six pregnancies were established (30% per transfer); since two patients aborted, the ongoing pregnancy rate was 20%.