title: Thin endometrium in donor oocyte recipients: enigma or obstacle for implantation?
abstract: OBJECTIVE
  To evaluate the combined effect of endometrial thickness and anatomic uterine factors on clinical outcome in oocyte donation recipients.
  
  
  METHODS
  Retrospective analysis of oocyte donation cycles conducted between 2005 and 2010.
  
  
  METHODS
  Two private IVF centers.
  
  
  METHODS
  A total of 737 donor oocyte cycles.
  
  
  METHODS
  None.
  
  
  METHODS
  Clinical pregnancy and live birth rates.
  
  
  RESULTS
  No statistically significant difference was found in clinical pregnancy rates and live birth rates in cycles with endometrial thickness <6 mm compared with those with endometrial thickness >10 mm. However, a relatively high rate of live births was found within a medium range of endometrial thickness (8.2-10 mm). All intrauterine adhesion cases occurred in cycles with thinner endometrium.
  
  
  CONCLUSIONS
  No statistically significant difference was found in clinical pregnancy rates and live birth rates in cycles with endometrial thickness <6 mm compared with those with thickness >6 mm. A relatively high rate of live births was found within a medium range of endometrial thickness (9.1-10 mm).
authors: Division of Fertility-In Vitro Fertilization, Department of Obstetrics and Gynecology, Carmel Medical Center, Faculty of Medicine, Technion, Haifa, Israel.
authors: Lena
authors: L
authors: Dain
authors: David
authors: D
authors: Bider
authors: Jacob
authors: J
authors: Levron
authors: Viktor
authors: V
authors: Zinchenko
authors: Sharon
authors: S
authors: Westler
authors: Martha
authors: M
authors: Dirnfeld
mesh_terms: D000022:Abortion, Spontaneous / Q000209:etiology; D000328:Adult; D016009:Chi-Square Distribution; D010064:Embryo Implantation; D004624:Embryo Transfer / Q000009:adverse effects; D004717:Endometrium / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D050498:Live Birth; D016015:Logistic Models; D008875:Middle Aged; D018587:Oocyte Donation / Q000009:adverse effects; D011247:Pregnancy; D018873:Pregnancy Rate; D012189:Retrospective Studies; D012307:Risk Factors; D016896:Treatment Outcome; D014463:Ultrasonography; D055815:Young Adult
keywords: Endometrial thickness; estrogen replacement therapy; oocyte donation; uterine factors