How does placenta previa occur?

1 Answer
Feb 5, 2017

Placenta previa is a complication in which the placenta is inserted partially or wholly in the lower uterine segment.

Explanation:

If the placenta does over lie the lower segment, as is the case with placenta previa, it may shear off a small section and may bleed.

This commonly occurs around 32 weeks of gestation, but can be as early as late mid trimester.

Placenta previa can be confirmed with an ultrasound . Women with placenta previa often present with painless, bright red vaginal bleeding.