Menstrual blood loss, haemoglobin and ferritin concentration of Beijing women wearing steel ring, VCu 200, and TCu 220c IUDs.
Menstrual blood loss (MBL), serum ferritin and whole blood cyanmethemoglobin were measured at pre- and 1, 3, 6, 12, 18 and 24th postinsertion cycles in 60 women wearing the Steel Ring, the Copper V (VCu 200) or the Copper T (TCu 220c). The MBL, incidence of menorrhagia and iron deficiency anemia were lower among users of the Steel Ring than among users of the Copper V and T. Anemia occurred later and the duration of menstruation was shorter with the Steel Ring than with the Copper T. There were no statistically significant differences between the Copper V and T.
D000740:Anemia / Q000209:etiology*; D002681:China; D005260:Female; D005293:Ferritins / Q000097:blood*; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects / Q000145:classification*; D007435:Intrauterine Devices, Copper / Q000009:adverse effects; D008598:Menstruation; D013232:Steel
D006454:Hemoglobins; D013232:Steel; D005293:Ferritins