Why Placenta Previa Complication in Pregnancy

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Placenta previa is an implantation of the placenta in the lower uterine segment, near or over the internal cervical os and is usually seen in the third trimester. This tends to occur in 1 out of every 200 pregnancies and can be caused by many different reasons and there are a few different types. Placenta previa can be a very scary diagnosis for a pregnant mom but knowing what to look for, seeking medical treatment early and complying with doctors’ orders mothers can still have a very healthy baby. Placenta moves as the womb stretches and grows during pregnancy. Early in pregnancy it is very normal for the placenta to be low in the womb, but as pregnancy progresses, the placenta moves to the top of the womb (MedlinePlus, 2012). When the cervix opens for delivery the placenta should be close to the top of the womb and should occur by the third trimester. When the placenta covers the cervix this is called previa and there are three different forms of placenta previa. The first type is marginal. The placenta does not over the opening but is next to the cervix. The next type is partial and that is when the placenta covers part of the cervical opening. Lastly there is complete, the cervical opening is completely covered by the placenta. Depending on the severity of the previa it can make a vaginal delivery very complicated and will most likely result in the mother having a C-section.
Most commonly placenta previa will occur in women that have a uterus that is
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