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Doctor insights on: Placenta Previa At 25 Weeks

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What is placenta previa?

What is placenta previa?

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. ...Read more

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Dr. James Lin
142 doctors shared insights

Placenta Blocks Cervix (Definition)

A previa is when a placenta entirely covers the opening of the cervix into the uterus (internal os). It is a reason for a cesarean section and if bleeding occurs and stops it may be a ...Read more


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Why is there bleeding with placenta previa?

Why is there bleeding with  placenta previa?

Leaky vessels: 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. ...Read more

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I have placenta previa but can I still do anal?

I have placenta previa but can I still do anal?

No: When you have placenta previa you should avoid all intercourse as it can still impact the uterus. ...Read more

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How to treat placenta previa marginalis grade 1?

How to treat placenta previa marginalis grade 1?

No treatment: Have to see if it resolves , if it does not then u will need a csection cannot deliver vaginally if u have that please discuss with your ob. ...Read more

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How long does bleeding with placenta previa last?

How long does bleeding with placenta previa last?

Varies: Placenta previa is a condition in which the placenta implants directly over the cervix and blocks the birth canal. For this reason, women with placenta previa require a c-section. Since the placenta is exposed more, it is more prone to bleeding as well. Bleeding ranges from continuous or occasional spotting to torrential hemorrhage that could threaten the lives of both mother and baby. ...Read more

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Why is the bleeding painless from placenta previa?

Why is the bleeding painless from placenta previa?

No contractions.: Because the bleeding does not involve the contractile part of the uterus, only the placenta over the cervix. The placenta is devoid of innervation, therefore the mother does not experience pain in bleeding previa unless preterm labor is also present. ...Read more

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Does smoking increase the risk for placenta previa?

Yes: 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. ...Read more

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If I have placenta previa, when am I most likely to bleed?

If I have placenta previa, when am I most likely to bleed?

Third trimester.: Most cases of placenta previa wither resolve or start bleeding by the third trimester (>28 weeks). Avoid all ssris, aspirin-like drugs (nsaids, motrin, aleve, advil) and only take regular tylenol (acetaminophen) during pregnancy. Avoid intercourse and heavy lifting/exercise until delivery or resolution of your placenta previa. Serial ultrasounds with an experienced maternal-fetal medicine specialist are warranted! ...Read more

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What congenital anomolies are associated with placenta previa?

What congenital anomolies are associated with placenta previa?

Nothing specific: In 3 deades of pediatrics and much of that dealing with birth defects, i know of no anomaly that is linked to placenta previa.The selection of an implantation site for the embryo and development of the placenta in a previa location appears to be random. ...Read more

Placenta (Definition)

The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via ...Read more