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Int J Gynaecol Obstet. 2011 Apr;113(1):50-3. doi: 10.1016/j.ijgo.2010.10.013. Epub 2011 Jan 26.

Length of the endometrial cavity and intrauterine contraceptive device expulsion.

Author information

1
Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medical Sciences and National Institute of Hormones and Women's Health, University of Campinas, Campinas, SP, Brazil. vbahamondes@cemicamp.org.br

Abstract

OBJECTIVE:

To evaluate the correlation between endometrial cavity length and expulsion rate in acceptors of the TCu380A intrauterine device (IUD) or the levonorgestrel-releasing intrauterine system (LNG-IUS).

METHODS:

The study included 235 nulligravida and parous women who received a TCu380A IUD or LNG-IUS and who were observed for up to 1 year. The length of the uterine cavity was measured by uterine sounding and ultrasonography.

RESULTS:

The endometrial cavity was shorter than 3.2 cm in 2 LNG-IUS users and at least 3.2 cm long in 87 LNG-IUS users, with expulsions occurring in 0 (0.0%) and 2 (2.3%) of these women, respectively (P>0.999). Among the TCu380A IUD users, the endometrial cavity was shorter than 3.6 cm in 63 women and at least 3.6 cm long in 83 women, with expulsions occurring in 3 (4.8%) and 5 (6.0%) of these women, respectively (P>0.999). The mean length of the endometrial cavity-evaluated via ultrasonography-among the 10 women whose devices were expelled was 3.9 ± 0.3 cm, compared with 3.9 ± 0.0 cm in those who retained their devices (P=0.799).

CONCLUSION:

The present results do not support the hypothesis of an association between uterine length and risk of intrauterine contraceptive expulsion.

PMID:
21272883
DOI:
10.1016/j.ijgo.2010.10.013
[Indexed for MEDLINE]

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