Obstetrics and gynecology
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Obstetrics and gynecology · Apr 2006
Review Comparative StudyPlacenta previa, placenta accreta, and vasa previa.
Placenta previa, placenta accreta, and vasa previa are important causes of bleeding in the second half of pregnancy and in labor. Risk factors for placenta previa include prior cesarean delivery, pregnancy termination, intrauterine surgery, smoking, multifetal gestation, increasing parity, and maternal age. The diagnostic modality of choice for placenta previa is transvaginal ultrasonography, and women with a complete placenta previa should be delivered by cesarean. ⋯ Vasa previa carries a risk of fetal exsanguination and death when the membranes rupture. The condition can be diagnosed prenatally by ultrasound examination. Good outcomes depend on prenatal diagnosis and cesarean delivery before the membranes rupture.
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Obstetrics and gynecology · Apr 2006
Comparative StudyPrevious cesarean delivery and risks of placenta previa and placental abruption.
To examine the association between cesarean delivery and previa and abruption in subsequent pregnancies. ⋯ II-2.