title: Women with advanced-stage endometriosis and previous surgery respond less well to gonadotropin stimulation, but have similar IVF implantation and delivery rates compared with women with tubal factor infertility.
abstract: OBJECTIVE
  To investigate the response to controlled ovarian hyperstimulation and ART outcomes in women with advanced-stage endometriosis and previous surgeries at the Yale IVF program between 1996 and 2002.
  
  
  METHODS
  Retrospective case control study.
  
  
  METHODS
  Academic medical center.
  
  
  METHODS
  The study group consisted of 68 women who previously undergone laparoscopic surgery for advanced-stage endometriosis. The control group included 106 women with tubal-factor infertility. The women with endometriosis underwent 133 IVF-ET cycles and the control group 208 cycles.
  
  
  METHODS
  Controlled ovarian hyperstimulation and IVF-ET.
  
  
  METHODS
  Response to gonadotropins, fertilization, cleavage, implantation, pregnancy, miscarriage, and live birth rates.
  
  
  RESULTS
  Lower peak E(2) levels, higher total gonadotropin requirements, lower oocyte yield, and higher cancellation rates were found in women with endometriosis compared with tubal-factor control subjects. However, no differences were found in fertilization, cleavage, implantation, pregnancy, miscarriage, and delivery rates between the endometriosis and tubal-factor groups.
  
  
  CONCLUSIONS
  Women with advanced-stage endometriosis who have undergone previous surgery respond less well to gonadotropins than women with tubal-factor infertility. However, implantation, pregnancy, and delivery rates are similar, suggesting that embryo quality and uterine receptivity remains unaffected despite diminished ovarian reserve in women with endometriosis.
authors.affiliation: Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut, USA. matakgr@yahoo.com
authors.forename: Ioannis M
authors.initials: IM
authors.lastname: Matalliotakis
authors.forename: Hakan
authors.initials: H
authors.lastname: Cakmak
authors.forename: Neal
authors.initials: N
authors.lastname: Mahutte
authors.forename: Yvoni
authors.initials: Y
authors.lastname: Fragouli
authors.forename: Aydin
authors.initials: A
authors.lastname: Arici
authors.forename: Denny
authors.initials: D
authors.lastname: Sakkas
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D036861:Delivery, Obstetric; D010064:Embryo Implantation / Q000187:drug effects; D004715:Endometriosis / Q000150:complications / Q000473:pathology / Q000601:surgery*; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods; D006062:Gonadotropins / Q000627:therapeutic use*; D006801:Humans; D007247:Infertility, Female / Q000209:etiology / Q000628:therapy*; D010062:Ovulation Induction / Q000379:methods; D011247:Pregnancy; D011256:Pregnancy Outcome; D018873:Pregnancy Rate; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D006062:Gonadotropins