title: An increased number of replaced embryos counteracts the adverse effect of hydrosalpinges on IVF/ET outcome.
abstract: OBJECTIVE
  The relationship between the number of replaced embryos and the outcome of IVF-ET in patients with hydrosalpinges was investigated in a retrospective, nonrandomized study performed at a governmental IVF center.
  
  
  METHODS
  One hundred patients undergoing 161 IVF cycles ending in embryo transfer were studied. Previously diagnosed hydrosalpinges were evident on transvaginal sonography in 48 cycles in 26 patients (group I) and not evident in 15 cycles in 10 patients (group II). The control group included 98 cycles in 64 patients with tubal lesions other than hydrosalpinx. Pregnancy and implantation rates were the main outcome measures.
  
  
  RESULTS
  Replacement of three or fewer embryos was associated with significantly lower implantation rates in group I compared to controls. Despite the difference in the rank of IVF trial within the same group, significantly lower implantation rates were found when four or fewer embryos were replaced in the control group and not in group I.
  
  
  CONCLUSIONS
  An increased number of replaced embryos counteracts the adverse effect of hydrosalpinges on IVF/ ET outcome.
authors.affiliation: Infertility/IVF Center, King Fahd Specialist Hospital, Buraidah, KSA.
authors.forename: K H
authors.initials: KH
authors.lastname: Abd-el-Maeboud
authors.forename: E
authors.initials: E
authors.lastname: al-Dein M Khalifa
authors.forename: E S
authors.initials: ES
authors.lastname: el-Hussein
mesh_terms: D000328:Adult; D000818:Animals; D010064:Embryo Implantation; D004624:Embryo Transfer; D005184:Fallopian Tube Diseases / Q000150:complications* / Q000175:diagnosis; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007246:Infertility / Q000503:physiopathology; D011247:Pregnancy; D011256:Pregnancy Outcome; D011446:Prospective Studies; D014463:Ultrasonography