A hydrosalpinx is a condition wherein the fallopian tubes are blocked, resulting in a collection of fluid. Fallopian tubes connect the ovaries to the uterus. Therefore, any blockage in the fallopian tubes can upset the normal functioning of the female reproductive system. If both the fallopian tubes are affected, then the condition is known as hydrosalpinges.
The fallopian tubes are responsible for delivering the ovarian egg (ova) to the uterus during pregnancy. Therefore blocked fallopian tubes can cause infertility. It is technically possible to get pregnant with one working fallopian tube, but pregnancy rates are lower in such cases. This is because of the adhesions and irritations caused by hydrosalpinx.