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Labor is divided into four stages:
Stage 1 is characterized by frequency and intensity of uterine contractions associated with cervical effacement and dilation. This stage usually lasts 5–8 h with shorter time intervals usually seen in multiparous women. This phase is also commonly referred to as the prepartum phase of labor.
Stage 2 is from full cervical effacement and dilatation to delivery of the fetus. This phase is also commonly referred to as the intrapartum phase of labor.
Stage 3 includes the delivery of fetus to delivery of placenta.
Stage 4 is the hour post delivery of the placenta.
The initial stage of labor usually gives the pregnant woman sufficient time to arrive at an obstetric suite for delivery. The failure to recognize the initial stage of labor, a short initial stage of labor, and or, a significant distance to the nearest obstetric suite may lead to delivery in prehospital setting or emergency department. This situation occurs...
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References
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© 2012 Springer-Verlag Berlin Heidelberg
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Soremekun, O.A. (2012). Pregnancy, Precipitous Delivery. In: Vincent, JL., Hall, J.B. (eds) Encyclopedia of Intensive Care Medicine. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00418-6_847
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DOI: https://doi.org/10.1007/978-3-642-00418-6_847
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