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为查明由延迟开始和限于周期中期应用的乙炔雌二醇(EE)和炔诺酮(NET)复合口服避孕药(COC)及下半周期单服NET组成的两相口服避孕药(OC)方案抑制排卵的效果而进行本研究。 选择应用其它的避孕法避孕,<35岁,不吸烟,月经规则证实有排卵(BBT双相)和在周期的第21d血清孕酮(P)值≥6 ng/ml,研究前3个月未应用任何激素制剂,在25%理想体重内的妇女列为研究对象。 20 d为一个服药周期。1组在第6~10 d服EE 50 μg和NET 1 mg COC,1片/d,
To identify two-phase oral contraceptives (OCs) consisting of delayed onset and end-stage ethinyl estradiol (EE) and norethisterone (NET) combined oral contraceptives (COCs) Program to inhibit the effect of ovulation in this study. Choose to use other contraceptive contraception, <35 years of age, non-smoking, menstrual rule confirmed ovulation (BBT biphasic) and serum progesterone (P) value ≥ 6 ng / ml on the 21st day of the cycle, Apply any hormonal preparation to women within 25% of ideal body weight as a study subject. 20 d for a medication cycle. One group received EE 50 μg and NET 1 mg COC on the 6th to 10th day, 1 tablet / day,