Human Reproduction, Vol. 14, No. 11, 2762-2769,
November 1999
© 1999 European Society of Human Reproduction and Embryology
Hydrosalpinx and IVF outcome: a prospective, randomized multicentre trial in Scandinavia on salpingectomy prior to IVF *
1 Department of Obstetrics and Gynaecology, Sahlgrenska University Hospital, S-413 45 Göteborg, Sweden, 2 The Fertility Clinic, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark and 3 IVF Center Falun, Department of Obstetrics and Gynaecology, Falu Hospital, S-791 82 Falun, Sweden
Many retrospective studies have shown that hydrosalpinx is associated with poor in-vitro fertilization (IVF) outcome. The mechanism of the actual cause is not yet fully understood. A clinical practice of performing salpingectomy before IVF has developed, without any evidence from prospective trials. The aim of the present prospective randomized trial was to test if a salpingectomy prior to IVF was effective in terms of increased pregnancy rates. Patients with hydrosalpinx were randomized to either a laparoscopic salpingectomy or no intervention before IVF. A total of 204 patients was available for an intention-to-treat analysis and 192 actually started IVF. Clinical pregnancy rates per included patient were 36.6% in the salpingectomy group and 23.9% in the non-intervention group (not significant, P = 0.067) and the ensuing delivery rates were 28.6% and 16.3% (P = 0.045). The corresponding delivery rates per transfer cycle were 29.5% versus 17.5% (not significant, P = 0.083). A subgroup analysis revealed significant differences in favour of salpingectomy, in implantation rates in patients with bilateral hydrosalpinges (25.6% versus 12.3%, P = 0.038) and in clinical pregnancy rates (45.7% versus 22.5%, P = 0.029) and delivery rates (40.0% versus 17.5%, P = 0.038) in patients with ultrasound visible hydrosalpinges. The delivery rate was increased 3.5-fold in patients with bilateral hydrosalpinges visible on ultrasound (P = 0.019).
Key words: hydrosalpinx/in-vitro fertilization/randomized controlled trial/pregnancy rates/salpingectomy
4 To whom correspondence should be addressed
* The study group for the multicentre trial and responsible investigator at each site were as follows. Sweden: Annika Strandell, Dept Ob/Gyn, Sahlgrenska University Hospital, Göteborg; Urban Waldenström, IVF Center Falun, Dept Ob/Gyn, Falun; Niklas Simberg, Dept Ob/Gyn, Uppsala University Hospital, Uppsala; Leif Hägglund, International Fertility Center, Malmö; György Csemiczky, Dept Ob/Gyn, Karolinska Hospital, Stockholm. Denmark: Anette Lindhard, The Fertility Clinic, Rigshospitalet, University Hospital, Copenhagen. Norway: Vidar von Düring, Dept Ob/Gyn, Trondheim; Kari Flo, Dept Ob/Gyn, University of Tromsø. Iceland: Gudmundur Arason, Dept Ob/Gyn, National University Hospital, Reykjavik.
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