Conclusion The cerebral ct "reversal sign" is a rare and characteristic feature of severe asphyxia in newborn.

结论“反转征”是新生儿围产期窒息后重度缺氧缺血性脑病的少见征象，CT具有特征性表现。

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Conclusion The increased rate of cesarean section can not be a significant reduction in neonatal mortality and severe asphyxia.

结论提高剖宫产率不能显著降低新生儿死亡率及重度窒息率。

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Objective To investigate the mode of delivery and its relationship with neonatal mortality, the rate of severe asphyxia relevance.

目的探讨分娩方式变化及其与新生儿死亡率、重度窒息率的相关性。

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