Oocyte donation programme: results obtained with intracytoplasmic sperm injection in cases of severe male factor infertility or previous failed fertilization

Intracytoplasmic sperm injection was carried out in 15 oocyte donation cycles of 15 infertile couples where oocytes had failed to fertilize after in-vitro fertilization (IVF) procedures or where the male partner had severe male factor infertility. A total of 62 oocytes were donated, but only 46 of these, in metaphase El, were injected. Of the injected oocytes, 31 (673%) had two pronuclei the morning after the injection procedure. On the following day, 29 embryos were obtained (93% of the fertilized oocytes) and 25 were transferred. Two patients were not successful and consequently did not undergo embryo transfer. A total of five clinical pregnancies were obtained, giving pregnancy rates of 333 and 38.4% per started cycle and embryo transfer respectively.