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为预防非意愿妊娠,降低流产率及其风险,目前已有多种避孕方法可供选择,诸如安全期避孕、使用阴茎套、宫颈帽或阴道隔膜的屏障避孕、宫内节育器避孕、手术如输精管切断或输卵管结扎避孕、阴道杀精子剂避孕和口服避孕药、探亲避孕药、长效避孕针、避孕埋植剂等。但纵然如此,因为种种的主、客观原因,有些妇女有时仍处于无保护性交环境下,此时作为一种应急的补救措施,使用事后避孕法就可有效地减少非意愿妊娠率。事后避孕法包括器械法和药物法,两者
To prevent unwanted pregnancies and to reduce the risk of miscarriage, there are a number of contraceptive methods to choose from, such as conception during pregnancy, contraceptive use of a condom, cervix or vaginal septum, contraception of an IUD, surgery such as Vasectomies or tubal ligation of contraception, vaginal spermicide contraception and oral contraceptives, visiting family contraceptives, long-acting contraception, contraceptive implants. Nonetheless, because of various subjective and objective reasons, some women are still under unprotected sexual intercourse sometimes. As an emergency remedial measure, the use of post-partum contraception can effectively reduce the rate of unwanted pregnancies. Postpartum contraception includes both instrumental and drug laws, both