title: Does a gradually decreasing menstrual blood loss (MBL) in women wearing a Cu-IUD indicate a risk for an accidental pregnancy?
abstract: In three separate series, comprising 71 women using either a Gravigard, a Nova-T or a Multiload contraceptive device, the menstrual blood loss (MBL) was quantitatively assessed before and after insertion of each respective IUD. In three women, an involuntary pregnancy was registered with the IUD in situ. In these three women a successively diminishing MBL was registered during the last 3 months before conception, while none of the remaining women included in the series experienced any accidental pregnancy or any reduction of the MBL. Thus, this report emphasizes the potential risk for an accidental pregnancy in women wearing a Cu-IUD if successively diminishing MBLs are observed.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007435:Intrauterine Devices, Copper; D008598:Menstruation; D011247:Pregnancy; D012306:Risk