title: Parameters that predict success for natural cycle in vitro fertilization-embryo transfer.
abstract: OBJECTIVE
  To analyze our natural cycle IVF-ET experience in order to identify parameters predictive for success.
  
  
  METHODS
  Retrospective study.
  
  
  METHODS
  Private-based reproductive center.
  
  
  METHODS
  All patients who presented for IVF-ET interested in unmedicated cycles.
  
  
  METHODS
  Routine monitoring for IVF-ET was performed. In addition, serum values for FSH, PRL, E2, and P were analyzed.
  
  
  RESULTS
  Day 3 FSH values were not useful, whereas elevated day 3 LH values adversely correlated with outcome. Age was the single most important predictor of success. With two cycles, 87.5% of pregnancies occurred.
  
  
  CONCLUSIONS
  With proper patient selection, natural cycle IVF-ET results can be substantially improved.
authors.affiliation: Faulkner Centre For Reproductive Medicine, Boston, Massachusetts 02130, USA.
authors.forename: M M
authors.initials: MM
authors.lastname: Seibel
authors.forename: M
authors.initials: M
authors.lastname: Kearnan
authors.forename: A
authors.initials: A
authors.lastname: Kiessling
mesh_terms: D000328:Adult; D000367:Age Factors; D006063:Chorionic Gonadotropin / Q000008:administration & dosage / Q000627:therapeutic use; D004624:Embryo Transfer; D004958:Estradiol / Q000097:blood; D005246:Feedback; D005260:Female; D005307:Fertilization in Vitro; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood; D011247:Pregnancy; D011374:Progesterone / Q000097:blood; D011388:Prolactin / Q000097:blood; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D006063:Chorionic Gonadotropin; D011374:Progesterone; D004958:Estradiol; D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone