title: Hydrosalpinx and IVF outcome: cumulative results after salpingectomy in a randomized controlled trial.
abstract: BACKGROUND
  A randomized controlled trial of salpingectomy prior to IVF in patients with hydrosalpinges has been conducted in Scandinavia. The results from the first transfer cycle have been published and clearly demonstrated an improved pregnancy outcome after salpingectomy had been performed in patients with hydrosalpinges large enough to be visible on ultrasound. The present article is aimed at analysing the effect of salpingectomy on cumulative birth rate, including all individual transfer cycles.
  
  
  RESULTS
  A total of 186 women underwent 452 cycles. Among the 77 women randomized to no surgical intervention, 24 underwent salpingectomy after one or two failed cycles. Cumulative results were analysed by Cox regression, taking into account the number of cycles per patient and the presence of a salpingectomy after a previous transfer. Salpingectomy implied a significant increase in birth rate (hazard ratio 2.1, 95% CI 1.6-3.6, P = 0.014). Within the subgroup of patients with ultrasound-visible hydrosalpinges, the birth rate was even higher (hazard ratio 3.8, 95% CI 1.5-9.2, P = 0.004). Implantation rate was significantly higher in patients who had undergone salpingectomy (27.2% versus 20.2, P = 0.03) and, in the subgroup of patients with ultrasound-visible hydrosalpinges, the difference was even larger (30.3% versus 17.1%, P = 0.003).
  
  
  CONCLUSIONS
  The results of the cumulative cycles strengthen the recommendation for a laparoscopic salpingectomy prior to IVF in patients with ultrasound-visible hydrosalpinges.
authors.affiliation: Department of Obstetrics and Gynaecology, Sahlgrenska University Hospital, S-413 45 Göteborg, Sweden. annika.strandell@medfak.gu.se
authors.forename: A
authors.initials: A
authors.lastname: Strandell
authors.forename: A
authors.initials: A
authors.lastname: Lindhard
authors.forename: U
authors.initials: U
authors.lastname: Waldenström
authors.forename: J
authors.initials: J
authors.lastname: Thorburn
mesh_terms: D000328:Adult; D004624:Embryo Transfer; D005184:Fallopian Tube Diseases / Q000601:surgery*; D005187:Fallopian Tubes / Q000601:surgery*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D011256:Pregnancy Outcome; D011271:Pregnancy, Ectopic; D012044:Regression Analysis; D016896:Treatment Outcome; D014427:Twins