[Retrograde zygote intrafallopian transfer in the treatment of unexplained infertility]

The first Scandinavian pregnancy after retrograde zygote intrafallopian transfer is reported. The individual stages in the treatment are described. These consist of hyperstimulation, oocyte aspiration and fertilising of the oocytes and, finally, transfer through the cervix and uterus and retrogradely to the salpinx under ultrasonic guidance. Zygote intrafallopian transfer (ZIFT) is suitable only for couples with unexplained infertility in contrast to in vitro fertilisation (IVF) which is employed in cases in which the fallopian tubes have been removed or do not function in the female partner. The principles and the expenses involved are, by and large, similar for ZIFT and IVF.