title: Ovarian response and pregnancy outcome in poor-responder women: a randomized controlled trial on the effect of luteinizing hormone supplementation on in vitro fertilization cycles.
abstract: OBJECTIVE
  To prospectively assess the effect of using a combination of recombinant follicle-stimulating hormone (rFSH) and recombinant luteinizing hormone (rLH) on ovarian stimulation parameters and treatment outcome among poor-responder patients.
  
  
  METHODS
  Prospective randomized trial.
  
  
  METHODS
  University-associated private medical center.
  
  
  METHODS
  Eighty-four patients who had a basal FSH level of >or=10 mIU/mL, who were >or=40 years of age, and who were undergoing their first IVF cycle participated in this controlled trial.
  
  
  METHODS
  Patients were randomly allocated into two study groups: group A, in which ovarian stimulation included GnRH analogue and rFSH and rLH, and group B, in which patients received GnRH analogue and rFSH without further LH addition.
  
  
  METHODS
  Primary outcome measures included the ongoing pregnancy rate per retrieval and implantation rate per embryo transferred. The number of days of gonadotropin treatment, E(2) level on rHCG administration day, number of developed follicles, number of retrieved oocytes, number of normally fertilized zygotes (at the two-pronuclear [2PN] stage), cumulative embryo score, and number of transferred embryos were also evaluated.
  
  
  RESULTS
  The overall pregnancy rate was 22.61% (19 pregnancies among 84 couples). The pregnancy wastage rate was 30.00% in group A and 22.22% in group B. There were no differences in either primary or secondary end points.
  
  
  CONCLUSIONS
  The results of this prospective and randomized trial show that the addition of rLH at a given time of follicular development produces no further benefit in the patient population of our study. A reduced ovarian response cannot be overcome by changes in the stimulation protocol.
authors.affiliation: Center for Reproductive Medicine and Infertility Quirón Bilbao, Bilbao, Spain. gorkabz@euskalnet.net
authors.forename: Gorka
authors.initials: G
authors.lastname: Barrenetxea
authors.forename: Jon Ander
authors.initials: JA
authors.lastname: Agirregoikoa
authors.forename: María Rosario
authors.initials: MR
authors.lastname: Jiménez
authors.forename: Arantza Lopez
authors.initials: AL
authors.lastname: de Larruzea
authors.forename: Teresa
authors.initials: T
authors.lastname: Ganzabal
authors.forename: Koldo
authors.initials: K
authors.lastname: Carbonero
mesh_terms: D000328:Adult; D004334:Drug Administration Schedule; D004359:Drug Therapy, Combination; D010064:Embryo Implantation / Q000187:drug effects*; D004624:Embryo Transfer; D004958:Estradiol / Q000097:blood; D005260:Female; D005300:Fertility Agents, Female / Q000008:administration & dosage*; D005307:Fertilization in Vitro; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage*; D007987:Gonadotropin-Releasing Hormone / Q000008:administration & dosage / Q000031:analogs & derivatives; D006801:Humans; D007247:Infertility, Female / Q000503:physiopathology / Q000628:therapy*; D007986:Luteinizing Hormone / Q000008:administration & dosage*; D054315:Oocyte Retrieval; D010053:Ovary / Q000187:drug effects* / Q000503:physiopathology; D010062:Ovulation Induction; D011247:Pregnancy; D011256:Pregnancy Outcome; D011446:Prospective Studies; D011994:Recombinant Proteins / Q000008:administration & dosage; D016896:Treatment Outcome
chemical_list: D005300:Fertility Agents, Female; D011994:Recombinant Proteins; D007987:Gonadotropin-Releasing Hormone; D004958:Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone