Uterine inversion
Encyclopedia
Uterine inversion is a potentially fatal childbirth
Childbirth
Childbirth is the culmination of a human pregnancy or gestation period with the birth of one or more newborn infants from a woman's uterus...

 complication with a maternal survival rate of about 85%. It occurs when the placenta
Placenta
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. "True" placentas are a defining characteristic of eutherian or "placental" mammals, but are also found in some snakes and...

 fails to detach from the uterus
Uterus
The uterus or womb is a major female hormone-responsive reproductive sex organ of most mammals including humans. One end, the cervix, opens into the vagina, while the other is connected to one or both fallopian tubes, depending on the species...

 as it exits, pulls on the inside surface, and turns the organ inside out.

Types

  • ONE: Complete. Visible outside the cervix
    Cervix
    The cervix is the lower, narrow portion of the uterus where it joins with the top end of the vagina. It is cylindrical or conical in shape and protrudes through the upper anterior vaginal wall...

    .
  • TWO: Incomplete. Visible only at the cervix.
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