title: A simple method for fallopian tube sperm perfusion using a blocking device in the treatment of unexplained infertility.
abstract: OBJECTIVE
  To evaluate the efficacy of fallopian sperm perfusion (FSP) using a new method similar to the FAST system in comparison with standard intrauterine insemination (IUI) in patients with unexplained infertility.
  
  
  METHODS
  Prospective, randomized, controlled study.
  
  
  METHODS
  Assisted conception service in a University Hospital.
  
  
  METHODS
  Women with unexplained infertility undergoing controlled ovarian hyperstimulation (COH).
  
  
  METHODS
  After hCG administration, patients were randomized to either standard IUI or FSP. The women received the same treatment in the first and all subsequent cycles. A maximum of three cycles was performed. Intrauterine insemination was performed using a standard method, and fallopian sperm perfusion was performed using a commercial device for hysterosalpingography and tubal hydropertubation.
  
  
  METHODS
  Clinical and ongoing pregnancy rates.
  
  
  RESULTS
  A total of 132 cycles was completed: 66 IUI cycles and 66 FSP cycles. In the IUI group, there were 5 ongoing pregnancies, giving a pregnancy rate of 7.6 per cycle and 15.6% per patient; in the FSP group, 14 ongoing pregnancies occurred, giving a pregnancy rate of 21.2% per cycle and 42.4% per patient. The prevalence of multiple pregnancies, miscarriages and ectopic pregnancies was similar in the two insemination groups. Fallopian sperm perfusion was easy to perform, and no case of sperm reflux was observed. The procedure was well tolerated and no complications were observed. The costs were comparable with standard IUI.
  
  
  CONCLUSIONS
  In the treatment of couples with unexplained infertility, the method for fallopian sperm perfusion described yields higher pregnancy rates than IUI, with no significant increase in costs or complications. However, these results need to be confirmed in larger studies before replacing IUI with FSP as standard practice.
authors.affiliation: Gynecology and Obstetrics Unit, Department of Reproductive and Developmental Science, University of Trieste, Istituto per l'Infanzia Burlo Garofolo, I.R.C.C.S., Trieste, Italy. ricci@burlo.trieste.it
authors.forename: G
authors.initials: G
authors.lastname: Ricci
authors.forename: G
authors.initials: G
authors.lastname: Nucera
authors.forename: C
authors.initials: C
authors.lastname: Pozzobon
authors.forename: R
authors.initials: R
authors.lastname: Boscolo
authors.forename: E
authors.initials: E
authors.lastname: Giolo
authors.forename: S
authors.initials: S
authors.lastname: Guaschino
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood; D004958:Estradiol / Q000097:blood; D005187:Fallopian Tubes / Q000502:physiology; D005260:Female; D006801:Humans; D007246:Infertility / Q000628:therapy*; D007315:Insemination, Artificial / Q000191:economics / Q000295:instrumentation* / Q000379:methods; D008297:Male; D011247:Pregnancy; D011446:Prospective Studies
chemical_list: D006063:Chorionic Gonadotropin; D004958:Estradiol