近来的研究指出在阴道内放置用多硅氧烷和甲孕酮混合物制成的环后,能渐渐吸收孕激素类物;而通过抑制周期中期的黄体生成激素(LH)的分泌,可以抑制排卵,本文报道使用含甲孕酮阴道环时,血浆中性类固醇的水平。 Recent studies have shown that progesterone can be gradually absorbed in the vagina by placing a ring made of a mixture of polysiloxane and medroxyprogesterone, and that ovulation can be suppressed by inhibiting the secretion of the mid-cycle luteinizing hormone (LH) This article reports the plasma neuter steroid levels when using medroxyprogesterone acetate.