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著者总结了24个医院采用乙炔雌二醇及dl-18甲炔诺酮(dl-norgestrel)做为房事后应急避孕药的临床观察。选择对象是来诊前的72小时内曾有过一次未采取避孕措施的房事。药物配方是将乙炔雌二醇200μg和dl-18-甲炔诺酮2mg制成含等量药物的片剂四枚。服药方法是于来诊时立即服用二片,十二小时后再服二片;服药后应避免房事,直至发生药效,即月经来潮为止。692例服药对象的平均年龄是21.8,15～24岁者占80.1%,小于15岁者占0.7%,大于35岁者占1.9%。月经周期规则者(即每个周期相差不超过±5日)共496例占71.8%,月经周期不规则者为194例、占28.8%,另有2例月经情况不明。房事后24小时内服药者占42.4%,24～48小时内服药者占
The authors summarize the clinical observations that ethinyl estradiol and dl-norgestrel (dl-norgestrel) are used as emergency contraceptives in 24 hospitals. The target group was those who had not taken any contraceptive measures within 72 hours prior to visiting the clinic. Drug formulation is ethinyl estradiol 200μg and dl-18-norethisterone 2mg made of the same drug containing four tablets. Medication method is to visit immediately when taking two tablets, twelve hours after taking two tablets; medication should be avoided after the event until the occurrence of efficacy, that is, menstrual cramps up. The mean age of the 692 subjects was 21.8, 80.1% were aged 15-24, 0.7% were younger than 15, and 1.9% were older than 35 years. A total of 496 cases accounted for 71.8% of the menstrual cycle rules (ie, no more than ± 5 days per cycle), irregular menstruation cycle was 194 cases, accounting for 28.8%, while the other two cases of menstruation unknown. Within 24 hours after taking the drug, 42.4% of the patients took medication within 24-48 hours