title: GnRH agonist and antagonist protocols for stage I-II endometriosis and endometrioma in in vitro fertilization/intracytoplasmic sperm injection cycles.
abstract: OBJECTIVE
  To investigate the outcomes of intracytoplasmic sperm injection (ICSI) cycles after controlled ovarian hyperstimulation (COH) with GnRH antagonist or GnRH agonist (GnRH-a) in mild-to-moderate endometriosis and endometrioma.
  
  
  METHODS
  Prospective randomize trial.
  
  
  METHODS
  A private IVF center.
  
  
  METHODS
  A total of 246 ICSI cycles in 246 patients were divided into three groups: women with mild-to-moderate endometriosis (n = 98); women who had ovarian surgery for endometrioma (n = 81); women with endometrioma and no history of previous surgery (n = 67).
  
  
  METHODS
  Patients in each group were randomized to COH with either triptrolein or cetrorelix.
  
  
  METHODS
  Clinical parameters, characteristics of COH, and ICSI results were analyzed.
  
  
  RESULTS
  Outcomes of COH with both GnRH antagonist and GnRH-a were similar in patients with mild-to-moderate endometriosis. Implantation rates were 15.9% vs. 22.6% and clinical pregnancy rates were 27.5% vs. 39% with GnRH antagonist and GnRH-a protocols, respectively, in patients who had ovarian surgery for endometrioma. Implantation rates were 12.5% vs. 14.8% and clinical pregnancy rates were 20.5% vs. 24.2% with GnRH antagonist and GnRH-a protocols, respectively, in patients with endometrioma and no history of ovarian surgery.
  
  
  CONCLUSIONS
  Considering the implantation and clinical pregnancy rates, COH with both GnRH antagonist and GnRH-a protocols may be equally effective in patients with mild-to-moderate endometriosis and endometrioma who did and did not undergo ovarian surgery.
authors.affiliation: Ufuk University School of Medicine, Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Ankara, Turkey.
authors.forename: Recai
authors.initials: R
authors.lastname: Pabuccu
authors.forename: Gogsen
authors.initials: G
authors.lastname: Onalan
authors.forename: Cemil
authors.initials: C
authors.lastname: Kaya
mesh_terms: D000328:Adult; D004715:Endometriosis / Q000150:complications*; D005260:Female; D007987:Gonadotropin-Releasing Hormone / Q000819:agonists* / Q000031:analogs & derivatives* / Q000037:antagonists & inhibitors* / Q000627:therapeutic use; D006801:Humans; D007247:Infertility, Female / Q000209:etiology / Q000628:therapy*; D010062:Ovulation Induction / Q000379:methods*; D011247:Pregnancy; D018873:Pregnancy Rate; D020554:Sperm Injections, Intracytoplasmic / Q000379:methods*; D017329:Triptorelin Pamoate / Q000627:therapeutic use*
chemical_list: D017329:Triptorelin Pamoate; D007987:Gonadotropin-Releasing Hormone; C062876:cetrorelix