title: Mild IVF using GnRH agonist long protocol is possible: comparing stimulations with 100 IU vs. 150 IU recombinant FSH as starting dose.
abstract: OBJECTIVE
  To test the possibility of stimulating ovaries with a mild IVF approach using a GnRH agonist long protocol.
  
  
  METHODS
  Retrospective study of 142 first IVF cycles of women aged 30 to 35 who had undergone stimulation with 100 IU or 150 IU of rFSH.
  
  
  RESULTS
  The mean dose of rFSH used was smaller in the low dose compared with the high dose group (999 vs. 1343 IU; p<0.001), obtaining comparable numbers of mature oocytes in both groups. Additionally, reducing the mean number of embryos transferred from 1.8 to 1.5 significantly decreased the twin rate in the low dose group while maintaining similar pregnancy rates in both groups.
  
  
  CONCLUSIONS
  It is possible to develop mild IVF using GnRH agonist long protocol in women with good prognosis. A reduced amount of rFSH and fewer transferred embryos allow for lower costs and risks of IVF without compromising the pregnancy rate.
authors.affiliation: URH-García del Real, Ana Teresa 30, 28023 Madrid, Spain. sfshaw@urh.es
authors.forename: Sylvia
authors.initials: S
authors.lastname: Fernández-Shaw
authors.forename: Nuria
authors.initials: N
authors.lastname: Pérez Esturo
authors.forename: Rosa
authors.initials: R
authors.lastname: Cercas Duque
authors.forename: Isabel
authors.initials: I
authors.lastname: Pons Mallol
mesh_terms: D000328:Adult; D004305:Dose-Response Relationship, Drug; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage*; D007987:Gonadotropin-Releasing Hormone / Q000819:agonists*; D006801:Humans; D007246:Infertility / Q000628:therapy*; D010062:Ovulation Induction / Q000379:methods*; D011247:Pregnancy; D018873:Pregnancy Rate; D011994:Recombinant Proteins / Q000008:administration & dosage*; D012189:Retrospective Studies; D014427:Twins / Q000187:drug effects
chemical_list: D011994:Recombinant Proteins; D007987:Gonadotropin-Releasing Hormone; D005640:Follicle Stimulating Hormone