3rd stage labour: retained placenta…

Retained placenta can be broadly divided into:

  • failed separation due to failure of uterine contraction or morbid adherence
  • separated but retained due to e.g. a snapped cord contracted uterus, closed cervix, …

Placenta accreta is the morbid adherence of the placenta to the uterus, and it is a very rare condition.
There are three main causes of retained placenta:

  • uterine atony – the uterus stops contracting
  • trapped placenta – behind a closed cervix
  • placenta accreta – an area of the placenta remains attached because it is deeply embedded into the uterus wall

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