Gao J, Zeng S, Sun B L, Wu S C, Dong J, Cong J, Zhu X H, Fan H M, Han L H, Xie Z
Contraception. 1986 Dec;34(6):559-71. doi: 10.1016/s0010-7824(86)80012-9.
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.
对60名佩戴钢环、铜V(VCu 200)或铜T(TCu 220c)的女性,在放置前以及放置后的第1、3、6、12、18和24个周期测量月经量(MBL)、血清铁蛋白和全血氰化高铁血红蛋白。佩戴钢环者的月经量、月经过多发生率和缺铁性贫血发生率低于佩戴铜V和铜T者。与铜T相比,佩戴钢环者贫血出现得更晚,月经持续时间更短。铜V和铜T之间无统计学显著差异。