title: The impact of rescue in vitro fertilization converted from high-response gonadotropin intrauterine insemination cycles in terms of implantation and pregnancy rates as compared with matched controls.
abstract: OBJECTIVE
  To determine whether conversion of high-response gonadotropin/intrauterine insemination (IUI) cycles to "rescue" in vitro fertilization (IVF) yields a higher implantation and pregnancy rate as found in matched IVF controls.
  
  
  METHODS
  A prospective study with a retrospective controlled section.
  
  
  METHODS
  Baskent University Department of Obstetrics and Gynecology.
  
  
  METHODS
  Thirty-two patients switched from high response gonadotropin/IUI cycles to "rescue" IVF, 202 women with polycystic ovaries (PCO), and 452 women without PCO from the IVF database.
  
  
  METHODS
  High-response gonadotropin/IUI cycles were converted to IVF to avoid cycle cancellation and high-order multiple pregnancies.
  
  
  METHODS
  Clinical parameters and characteristics of controlled ovarian hyperstimulation and intracytoplasmic sperm injection results.
  
  
  RESULTS
  The pregnancy rate was 78.1% in the rescue IVF group: 66.3% and 58.2% in the PCO and non-PCO groups, respectively. Clinical pregnancy rates and ongoing pregnancy rates also tended to be higher in the rescue IVF group but the difference was not statistically significant. The main difference between the groups was in the implantation rate: 37.5% in the rescue IVF group, which was greater than that of the PCO and non-PCO groups (27.58% and 24.46%, respectively).
  
  
  CONCLUSIONS
  Our study demonstrates that conversion of gonadotropin IUI cycles in patients with excessive follicles to IVF is a safe, effective strategy. Implantation rates are higher than those in hyper-responder and normal responder IVF patients.
authors.affiliation: Department of Obstetrics and Gynecology, Division of Reproductive and Endocrinology Unit, Adana, Turkey.
authors.forename: Bulent
authors.initials: B
authors.lastname: Haydardedeoglu
authors.forename: Tayfun
authors.initials: T
authors.lastname: Bagis
authors.forename: Erhan
authors.initials: E
authors.lastname: Simsek
authors.forename: Tayfun
authors.initials: T
authors.lastname: Cok
authors.forename: Servet Ozden
authors.initials: SO
authors.lastname: Hacivelioglu
authors.forename: Serkan
authors.initials: S
authors.lastname: Erkanli
mesh_terms: D000328:Adult; D010064:Embryo Implantation / Q000187:drug effects / Q000502:physiology*; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D005640:Follicle Stimulating Hormone / Q000097:blood / Q000627:therapeutic use; D006062:Gonadotropins / Q000494:pharmacology / Q000502:physiology*; D006801:Humans; D007315:Insemination, Artificial / Q000379:methods*; D007986:Luteinizing Hormone / Q000097:blood; D011085:Polycystic Ovary Syndrome / Q000503:physiopathology; D011247:Pregnancy; D018873:Pregnancy Rate; D011446:Prospective Studies; D012189:Retrospective Studies
chemical_list: D006062:Gonadotropins; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone