title: Evaluation of the importance of late follicular phase endometrial echo patterns and pregnancy outcome following embryo transfer by evaluating infertile donor/recipient pairs.
abstract: OBJECTIVE
  To investigate if the late follicular phase echo pattern is associated with pregnancy outcome in donors vs recipients.
  
  
  METHODS
  Infertile donors sharing eggs with recipients were retrospectively evaluated. The endometrial echo pattern was evaluated on the day of human chorionic gonadotropin injection in donors and on the day before progesterone was given to recipients.
  
  
  RESULTS
  Almost twice as many donors conceived when the triple-line pattern was found compared to isoechogenic (IE) (51.5% or 52/101 vs 27.3% or 6/22) but there were inadequate numbers in the IE group to show a significant difference. There was not even a trend for a difference in recipients (55.2%, 37/67 vs 53.8%, 14/26).
  
  
  CONCLUSIONS
  The trend in this study for higher pregnancy rates in COH cycles with triple-line isoechogenic pattern in the late follicular phase will prompt a study of a larger group of patients undergoing IVF-ET in the modern era. If confirmed one treatment option would be to freeze and defer transfer to an estrogen/progesterone cycle.
authors.affiliation: The University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School at Camden Cooper Hospital/University Medical Center, Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology & Infertility, Camden, NJ, USA. laurie@ccivf.com
authors.forename: J H
authors.initials: JH
authors.lastname: Check
authors.forename: J K
authors.initials: JK
authors.lastname: Choe
authors.forename: J
authors.initials: J
authors.lastname: Amui
authors.forename: D
authors.initials: D
authors.lastname: Brasile
authors.forename: T
authors.initials: T
authors.lastname: Jamison
mesh_terms: D000328:Adult; D004624:Embryo Transfer; D004717:Endometrium / Q000000981:diagnostic imaging*; D005260:Female; D005307:Fertilization in Vitro; D005498:Follicular Phase; D006801:Humans; D018587:Oocyte Donation; D011247:Pregnancy; D011256:Pregnancy Outcome; D012189:Retrospective Studies; D014463:Ultrasonography