Placenta Previa Overview
Placenta previa is a complication of pregnancy in which the placenta (the organ that joins the mother and fetus and transfers oxygen and nutrients to the fetus) is implanted either near to or overlying the outlet of the uterus (womb). Placenta previa is found in approximately four out of every 1000 pregnancies beyond the 20th week of gestation. The main symptom of placenta previa is bleeding.
Several terms have been used to characterize placenta previa. The types of placenta previa include:
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