“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%。
随便看	frequency encoding frequency equation frequency error frequency estimator frequency factor frequency-following response frequency four-vector frequency fraction frequency function frequency histogram frequency hopping frequency hopping technique frequency hypothesis frequency hysteresis frequency indicator frequency instability frequency interval frequency inversion frequency jitter frequency judge approach frequency jumping frequency locking frequency-locking frequency matching frequency measurement

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