阴道泡沫剂 阴道泡沫剂时兴装入带涂药器的小小的气溶胶罐内。在把气溶胶罐摇匀后,把吸入泡沫剂的涂药器固定住,然后倒置插入阴道深处,将泡沫剂推送进阴道。必须在每次性交后半小时内给阴道涂上泡沫剂,重复一次比单用一次效果更好。泡沫剂既能杀灭精子也能机械性地阻塞子宫颈口,借此防止任何可能存活的精子进入子宫内。如果男方同时佩戴避孕套,避孕作用将会增强。 避孕有效率:约90%;如果男方同时佩戴避孕套,则接近100%。
阴道发泡片和栓剂 阴道发泡片和阴道栓剂只能在有足够的时间溶解于阴道内才能起作用。所以,每次性交前10-15分钟就必须放入阴道内。但是,如果单独使用,避孕效果大打折扣。 避孕效果:效果有限。
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使用杀精子制剂:1.用涂药器推送阴道泡沫剂;2.放置阴道杀精子栓剂。 Using spermicides. 1. Inserting spermicidal foam with an applicator. 2. Inserting a spermicidal suppository.
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杀精子乳膏和凝胶剂 因为杀精子乳膏和凝胶剂有时在阴道内分布不均,其效果不如阴道泡沫剂。正象使用阴道泡沫剂一样,使用的量则能够由使用者自己掌握。然而,当合并使用阴道隔膜时,它的避孕作用大大增强。如果无阴道隔膜可用,则男方应该佩戴避孕套。 避孕效果:如果不合并使用阴道隔膜,则效果较差。
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Contraception
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Methods
of Contraception:Contraceptive
Methods for Women:Spermicides
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Vaginal Foam Vaginal foam comes in a small aerosol can with a special applicator. After shaking the can, the woman fills the applicator with foam and then, lying down, inserts it deep into her vagina. This must be done not more than half an hour before each coitus. Two applications are better than one. The foam kills the sperm and also blocks the cervix mechanically, thus preventing any sperm cells that might have survived from entering the uterus. The protection can be increased further if the man uses a condom at the same time. Effectiveness: about 90 percent; if the man also wears a condom, close to 100 percent.
Foaming Tablets and Suppositories Vaginal foaming tablets and suppositories can only work when they have time enough to dissolve inside the vagina. They must, therefore, be inserted 10 to 15 minutes before each coitus. However, if used alone they do not offer much protection against pregnancy. Effectiveness: not very effective.
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Spermicidal Creams and Jellies Spermicidal creams and jellies are less effective than foam because they sometimes disperse unevenly. Some can be used by themselves, just as vaginal foam. However, they provide much greater protection when used together with a diaphragm. If no diaphragm is available, the man should wear a condom. Effectiveness: not very effective without a diaphragm.
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