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Download Pathways To Pregnancy And Parturition 3rd Edition Zip Extra Quality Full

Download Pathways To Pregnancy And Parturition 3rd Edition Zip Full

It is interesting to speculate why nausea and vomiting in pregnancy affects the risk of birth weight below the median rather than, as was reported in a previous review [ 16 ], lower rather than higher. One possibility is that the increased risk is a true biological association rather than an artefact. A second possibility is that the distribution of birth weight in the women with nausea and vomiting in pregnancy is shifted towards lower birth weight values. This possibility was examined using a logistic regression model where the dependent variable is LBW (i.e. below the median). From this model we estimated that there was an average difference in distribution of 5% between those with no nausea and vomiting (adjusted OR = 1.05 [95% CI: 1.00-1.10]) and those with nausea and vomiting (adjusted OR = 1.05 [95% CI: 1.00-1.11]). Although this difference is small, it corresponds to a difference of 7 births per 10,000 at gestational age 33 weeks. Given the overall incidence of 7 births per 10,000 births at 33 weeks gestation (or 3 per 10,000 births at gestational age 30 weeks), there is evidence of some shift in the distribution of LBW babies in women with nausea and vomiting in pregnancy. It is possible that the increased risk of giving birth to LBW babies in association with nausea and vomiting in pregnancy, in the absence of anti-emetics, could therefore reflect the excess risk of LBW babies being born to women with nausea and vomiting in pregnancy and LBW is associated with increased risk of perinatal mortality [ 32 ]. It is also possible that alterations in parturition are a consequence of the nausea and vomiting and it may be that the risk of having a LBW baby is reduced in association with nausea and vomiting by the increase in gestational length from less nausea and vomiting. Supporting this possibility is the finding that the longer gestational age at delivery in association with nausea and vomiting was correlated with the rise in mean birth weight in association with nausea and vomiting (Pearson correlation 0.51).

Download Pathways To Pregnancy And Parturition 3rd Edition Zip Extra Quality Full

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