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The optimal management of post-term pregnancy (gestation lasting 42 weeks or more) is not resolved. The risk to the fetus increases as pregnancy continues post term and this has to be balanced against the risks associated with induction. Here we consider whether routine induction at around 42 weeks has any advantages over expectant management, in which pregnancy is allowed to run its natural course unless the fetus (or mother) develops features of distress.
过期妊娠（妊娠持续42周或更长时间）的最佳管理方法尚未确定。随着妊娠持续超过预产期，胎儿的风险会增加，这必须与引产相关的风险相权衡。在此，我们探讨在42周左右进行常规引产与期待管理相比是否具有任何优势，期待管理是指除非胎儿（或母亲）出现窘迫特征，否则让妊娠自然发展。
