The incidence of placenta previa is 1/200 pregnancies. Most cases of placenta previa will be identified prenatally by prenatal ultrasound. The following is recommended regarding mode and timing of delivery
The nomenclature has been modified and the terms partial and marginal have been eliminated. All placentas which overlie or abut the internal cervical os (to any degree) should be referred to as placenta previa. A placenta which is near to but not overlying the os is termed a low-lying placenta.
Abnormal Placentation: Placenta Previa, Vasa Previa, and Placenta Accreta
Society for Maternal-Fetal Medicine (SMFM) Consult Series #44: management of bleeding in the late preterm period
The Incidence of Postpartum Hemorrhage in Pregnant Women with Placenta Previa: A Systematic Review and Meta-Analysis
Analysis of first and second trimester maternal serum analytes for the prediction of morbidly adherent placenta requiring hysterectomy
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