“shoulder dystocia”的概念、定义、翻译、参考文献-科学参考

单词	shoulder dystocia
释义	shoulder dystocia Encyclopedia 医学难产释 shoulder dystocia肩难产在经阴道分娩过程中，当胎头完全娩出后而胎儿前肩嵌顿于耻骨联合后方，用常规助产方法不能娩出胎儿双肩的一种难产。事先往往无法准确预测，一旦发生，情况紧急，若处理不当，将导致母婴严重并发症，其发生率可达 0.5%～1%。
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