[Relation between embryo transfer distance from the fundus and the pregnancy rate].
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.
Li
Hong
H
Center for Reproductive Medicine, Department of Obstetrics and Gynaecology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. lihong6918@263.net
Xing
Fu-qi
FQ
Quan
Song
S
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