Comparison of pregnancy and implantation rates in zygote intrafallopian transfer and uterine embryo transfer for nontubal infertility.

We carried out a prospective randomized trial on 220 couples with nontubal factor infertility to compare pregnancy rates and implantation rates after zygote intrafallopian transfer (ZIFT) and uterine embryo transfer (UET). The zygote was transferred by laparoscopy into the fallopian tube 24 hours after oocyst retrieval. UET was performed 72 hours after retrieval with abdominal sonography guide. Transfer was performed in 102 cycles in the ZIFT and 100 cycles in the U ET group. The pregnancy and implantation rates were significantly higher in the ZIFT group (42.1% and 11.7%) than in the UET group (21.0% and 7.8%) (P < 0.05). ZiFT could be considered for couples who have limited time and adequate financial support.