P-319: The ‘afterload’ method of embryo transfer reduces the incidence of retained embryos following embryo transfer and may be superior to the direct insertion method of embryo transfer

Abstract

Embryo transfer (ET) is an essential and critical step in assisted reproduction. We have previously described an ‘afterload’ method of embryo transfer using a co-axial technique and noted a trend toward increased pregnancy (P=0.06) compared to direct transfer with an Edward-Wallace catheter (Neithardt et al., 2005). Having observed a trend toward improvement in pregnancy rates in the smaller preliminary study (n=127), we now report a larger retrospective analysis to compare the ‘afterload’ method to the standard ET technique.