title: Effect of endometriosis on implantation rates when compared to tubal factor in fresh non donor in vitro fertilization cycles.
abstract: OBJECTIVE
  The objective of the following study is to compare the outcome of in vitro fertilization and embryo transfer (IVF-ET) in women with endometriosis and tubal-factor infertility.
  
  
  METHODS
  Retrospective study.
  
  
  METHODS
  Tertiary referral hospital, assisted reproductive technologies unit.
  
  
  METHODS
  The study group consisted of 78 women diagnosed with advanced stage endometriosis. The control group included 100 women with tubal-factor infertility. These groups were retrospectively analyzed regarding stimulation, fertilization, embryo development, implantation and pregnancy outcome.
  
  
  METHODS
  Controlled ovarian hyperstimulation and IVF-ET.
  
  
  RESULTS
  Lower oocyte yield with lower fertilization rate were found in women with endometriosis compared with tubal-factor control subjects. However, no differences were found in cleavage, implantation and clinical pregnancy rates between the endometriosis and tubal-factor groups.
  
  
  CONCLUSIONS
  Our results showed that women with endometriosis have a lower oocyte yield and lower fertilization rate compared with women with tubal-factor infertility. However, once the oocyte is fertilized, it seems that the embryo has a normal chance of implantation, leading to similar pregnancy rates and adequately treated women with endometriosis have equal chances of conception as seen with tubal-factor infertility.
authors.affiliation: Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Neeta
authors.initials: N
authors.lastname: Singh
authors.affiliation: Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Kusum
authors.initials: K
authors.lastname: Lata
authors.affiliation: Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Moumita
authors.initials: M
authors.lastname: Naha
authors.affiliation: Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Neena
authors.initials: N
authors.lastname: Malhotra
authors.affiliation: Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Abhinash
authors.initials: A
authors.lastname: Tiwari
authors.affiliation: Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Perumal
authors.initials: P
authors.lastname: Vanamail
keywords: Endometriosis; implantation; in vitro fertilization-embryo transfer; infertility; ovarian reserve; pregnancy