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A 43-year-old member asked:

What are the tests for placenta previa?

3 doctor answers8 doctors weighed in
Dr. Miguel Cano
Obstetrics and Gynecology 30 years experience
Ultrasound: Ultrasound is the main way to follow a previa. If your previa resolves with time, your labor should be the same as anyone else's. If it doesn't, tests for anemia, clotting factors, and blood availabilty are tests that are performed to be prepared for any emergency at delivery. Most patients are at bed rest in their 2nd trimester and pelvic rest until delivery.
Dr. Nikolaos Zacharias
Maternal-Fetal Medicine 26 years experience
Prenatal ultrasound.: Expert prenatal ultrasound with doppler mapping can diagnose placenta previa and possible accreta. No other test is required to establish this life-threatening diagnosis.
Dr. Brian Nguyen
Obstetrics and Gynecology 11 years experience
Ultrasound: Previa: Placenta overlies the cervix/birth canal. Gr 1 means placenta is close, Gr 4 means it's directly overlying/blocking the baby's exit -- high chance of preterm labor & bleeding; you'd need a C/S at 36-37wks. More common in woman w/ hx of C/S & smoking. Not much you can do but wait. If dx'ed early, the uterus still grows/stretches and a placenta can migrate away even in 3rd tri. Follow w/ US.

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A 28-year-old member asked:

What is placenta previa?

4 doctor answers11 doctors weighed in
Dr. Jeff Livingston
Obstetrics and Gynecology 22 years experience
Placenta over cervix: Placenta previa is a complication of pregnancy where the placenta is covering the opening of the uterus called the cervix. It occurs in 1/200 pregnancies more commonly in patients with a previous c section. If diagnosed in early pregnancy it may resolve before delivery. If not a C-section will be needed. It can cause painless bleeding often requiring bedrest.

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Last updated Jan 1, 2021

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