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Low implantation rate after in-vitro fertilization in patients with hydrosalpinges diagnosed by ultrasonography.
Human Reproduction 1994 October
The purpose of this study was to assess whether patients with tubal infertility and a hydrosalpinx have a reduced implantation rate after in-vitro fertilization. The study included 741 patients who had 1190 consecutive oocyte aspirations. The presence or absence of hydrosalpinges was assessed by transvaginal ultrasonography on day 2 of all cycles. In 62 patients treated in 104 cycles a hydrosalpinx was diagnosed, whereas 493 patients treated in 813 cycles had no hydrosalpinx and eight patients treated in 16 cycles had uncertain hydrosalpinx. The results show that the presence of a hydrosalpinx is associated with a reduced pregnancy rate per aspiration (19.2 versus 32.6%; P < 0.01), reduced implantation rate (2.9 versus 10.3%, P < 0.0005), reduced delivery rate per aspiration (5.8 versus 20.9%, P < 0.0005), reduced delivery rate per embryo transfer (6.6 versus 22.8%, P < 0.0005) and increased early pregnancy loss (70 versus 36%, P < 0.005). Among 178 patients with unexplained infertility or other infertility factors treated with 257 aspirations the results were similar to those in patients with tubal infertility without a hydrosalpinx. In conclusion, the presence of a hydrosalpinx does not impair the number of embryos transferred but seems to impair the implantation process. We hypothesize that this may be due to leakage of fluid into the uterine cavity which may disturb the receptivity of the endometrium and/or the developing embryos.
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