title: [Relation between embryo transfer distance from the fundus and the pregnancy rate].
abstract: OBJECTIVE
  To investigate the association of embryo transfer distance from the fundus (TDF) with the clinical pregnancy rate (PR).
  
  
  METHODS
  Between January 2005 and September 2006, ultrasound (US)-guided embryo transfer was conducted in 610 women. TDF was measured by transabdominal US according to which the subjects were divided into 4 groups. The association between TDF and PR or between TDF and abnormal pregnancy was analyzed.
  
  
  RESULTS
  No significant differences in PR were observed among those 4 groups, but PR was the highest in the group with TDF >or=2 cm, and the lowest in the group 1 cm. The rate of early spontaneous abortion was higher in the group with TDF >or=2 cm.
  
  
  CONCLUSIONS
  TDF variation does not produce significant difference in PR, but the distance of 1.0-2.0 cm is recommended.
authors.affiliation: Center for Reproductive Medicine, Department of Obstetrics and Gynaecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. lihong6918@263.net
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.forename: Fu-qi
authors.initials: FQ
authors.lastname: Xing
authors.forename: Song
authors.initials: S
authors.lastname: Quan
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging*; D000328:Adult; D004624:Embryo Transfer / Q000379:methods*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007247:Infertility, Female / Q000628:therapy; D011247:Pregnancy; D011256:Pregnancy Outcome; D018873:Pregnancy Rate; D014463:Ultrasonography