P-13: Is intrafallopian transfer of ova immediately after intracytoplasmic sperm injection (Rapid ICSI-ZIFT) a technique of choice for infertile couples with at least one patent fallopian tube?

Abstract

In IVF, implantation rates are often used to evaluate the results of studies. Direct comparison of ICSI-IVF with transfer of Ova immediately after Intracytoplasmic Sperm Injection (Rapid ICSI-ZIFT) is not possible, because the number of eggs fertilized with Rapid ICSI-ZIFT is not known. Two different pieces of information suggest that in vivo-fertilized eggs possibly have a higher implantation rate. Ovum transfer data from the early 1980s showed that blastocysts and morula-stage embryos are usually recovered from the uterus 93.5 to 120 hours after the luteinizing hormone peak, and the transfer of just one recovered blastocyst results in a high pregnancy rate.