Objective: To determine the effect of hydrosalpinx fluid-containing me
dium on murine embryo development and implantation. Design: The develo
pment of one-, two-, and four-cell mouse embryos in medium containing
5%, 10%, and 20% of human hydrosalpinx fluid was observed. Implantatio
n rates of mouse embryos transferred into the uterine horn with hydros
alpinx fluid-containing media were determined. Setting: Private hospit
al-based fertility center and IVF program. Main Outcome Measure(s): Pe
rcentage of embryos continuing cell division and implantation rates af
ter ET. Result(s): Hydrosalpinx fluid in culture medium affected embry
o development in a dose-dependent fashion. The injection of hydrosalpi
nx fluid-containing medium into the uterine horn did not affect embryo
implantation. Conclusion(s): Hydrosalpinx fluid negatively affects mu
rine embryo development, but its presence in the uterine horn at ET di
d not affect implantation. (C) 1997 by American Society for Reproducti
ve Medicine.