Placenta Previa

Posted by e-Medical PPT Saturday, May 15, 2010
Placenta previa is an obstetric complication that occurs in the second and third trimesters of pregnancy. It may cause serious morbidity and mortality to both the fetus and the mother. It is one of the leading causes of vaginal bleeding in the second and third trimesters.
The exact etiology of placenta previa is unknown.
The condition may be multifactorial and is postulated to be related to multiparity, multiple gestations, advanced maternal age, previous cesarean delivery,2 previous abortion, and possibly, smoking. Unlike first trimester bleeding, second and third trimester bleeding is usually secondary to abnormal placental implantation.
Placenta previa complicates approximately 5 of 1,000 deliveries and has a mortality rate of 0.03%.

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