title: Efficiency of changing the embryo transfer time from day 3 to day 2 among women with poor ovarian response: a prospective randomized trial.
abstract: OBJECTIVE
  To compare the outcome of day 2 and day 3 embryo transfers in women demonstrating poor ovarian response.
  
  
  METHODS
  Prospective randomized clinical trial.
  
  
  METHODS
  Private assisted reproductive technology center.
  
  
  METHODS
  Two hundred eighty-one women demonstrating poor ovarian response to controlled ovarian hyperstimulation.
  
  
  METHODS
  Women who were poor responders were randomly allocated to day 2 or day 3 embryo transfer following oocyte retrieval.
  
  
  METHODS
  Implantation rates and pregnancy rates per oocyte retrieval and embryo transfer.
  
  
  RESULTS
  The clinical pregnancy rates per oocyte retrieval (37.2% vs. 21.4%, respectively; P<.05) and per embryo transfer (38.9% vs. 24.1%, respectively; P<.05) were significantly higher in the day 2 embryo transfer group compared with day 3. On the other hand, implantation rates were not different between groups (23.9% vs. 17.2%, respectively; P=.08).
  
  
  CONCLUSIONS
  Our results demonstrated that transfering embryos on day 2 could provide an alternative to the management of poor responder patients.
authors.affiliation: Bahceci Women Health Care Center and German Hospital in Istanbul, Istanbul, Turkey. mbahceci@superonline.com
authors.forename: Mustafa
authors.initials: M
authors.lastname: Bahceci
authors.forename: Ulun
authors.initials: U
authors.lastname: Ulug
authors.forename: H Nadir
authors.initials: HN
authors.lastname: Ciray
authors.forename: Mehmet Ali
authors.initials: MA
authors.lastname: Akman
authors.forename: Halit Firat
authors.initials: HF
authors.lastname: Erden
mesh_terms: D000328:Adult; D004624:Embryo Transfer / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000453:epidemiology* / Q000628:therapy*; D010062:Ovulation Induction / Q000706:statistics & numerical data*; D011247:Pregnancy; D018873:Pregnancy Rate; D011446:Prospective Studies; D017211:Treatment Failure; D016896:Treatment Outcome; D014421:Turkey / Q000453:epidemiology