作者: Robin Russell
DOI: 10.1007/978-1-4471-0435-3_20
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摘要: Although there is undoubtedly an association between the use of regional analgesia, length labour and mode delivery, nature this relationship complex. Evidence conflicting in many studies scientific methods are unreliable. Retrospective flawed because women do not choose analgesia at random whilst randomised prospective blinded, allowing observer bias. Impact may be more useful, although they take no account other changes clinical practice. Such changes, however, crucial, order to maximise spontaneous delivery rate. Whether prolongs causes operative instrumental deliveries possibly less importance than establishing optimum management for choosing