title: A controlled ovarian hyperstimulation regimen involving intermittent gonadotropin administration with a "short" protocol of gonadotropin releasing hormone agonist for in vitro fertilization.
abstract: OBJECTIVE
  To examine the effects of an intermittent injection regimen of exogenous gonadotropin for controlled ovarian hyperstimulation on follicular development and on in vitro fertilization (IVF) outcome, 120 women who were candidates for IVF received intermittent injection (II) or consecutive injection (CI) regimens with a "short" protocol (SP) or a "long" protocol (LP) of gonadotropin releasing hormone agonist (GnRHa). Pure follicle stimulating hormone (pFSH) was injected to the women in the II groups on the first, second, and fifth days of the stimulation cycle and every other day thereafter. The women in the CI groups received a daily injection of pFSH. An additional 16 patients who were treated with both II-SP and CI-LP were also analyzed.
  
  
  RESULTS
  Although the cancellation rate in the II-LP group was higher than those in the other groups, follicular development and IVF outcomes in the II-SP group were similar to those in the CI groups. The number of injections in the II-SP group was about half that in the CI groups.
  
  
  CONCLUSIONS
  These results indicate that an intermittent pFSH injection regimen with a "short" protocol of GnRHa may be beneficial for patients in terms not only of being a less painful treatment but also causing less physical and mental stress than daily injections.
authors.affiliation: Department of Obstetrics and Gynecology, Nagoya University School of Medicine, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Suganuma
authors.forename: S I
authors.initials: SI
authors.lastname: Tsukahara
authors.forename: T
authors.initials: T
authors.lastname: Kitagawa
authors.forename: M
authors.initials: M
authors.lastname: Furuhashi
authors.forename: Y
authors.initials: Y
authors.lastname: Asada
authors.forename: I
authors.initials: I
authors.lastname: Kondo
mesh_terms: D000328:Adult; D004624:Embryo Transfer; D004717:Endometrium / Q000187:drug effects / Q000254:growth & development; D004958:Estradiol / Q000097:blood; D005260:Female; D005298:Fertility; D005307:Fertilization in Vitro / Q000187:drug effects*; D005640:Follicle Stimulating Hormone / Q000097:blood / Q000494:pharmacology; D007987:Gonadotropin-Releasing Hormone / Q000819:agonists*; D006062:Gonadotropins / Q000494:pharmacology*; D006801:Humans; D009865:Oocytes / Q000378:metabolism; D006080:Ovarian Follicle / Q000187:drug effects / Q000254:growth & development; D010053:Ovary / Q000187:drug effects*; D011247:Pregnancy; D013480:Superovulation / Q000378:metabolism
chemical_list: D006062:Gonadotropins; D007987:Gonadotropin-Releasing Hormone; D004958:Estradiol; D005640:Follicle Stimulating Hormone