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Doctor insights on: Does Placenta Previa Cause Preterm Delivery

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How does placenta previa cause preterm delivery?

How does placenta previa cause preterm delivery?

Bleeding and Cntrxns: 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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Dr. Mark Pack
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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Diagnosed with partial/marginal placenta previa (25 wks). Precautions? Worried about preterm labor, placenta has not moved up since 17 wk scan.

Diagnosed with partial/marginal placenta previa (25 wks). Precautions? Worried about preterm labor, placenta has not moved up since 17 wk scan.

Try to relax!: It's still fairly early to be worried. Most patients with marginal placentas deliver vaginally without incident. If this is your first pregnancy your lower uterine segment will not soften until fairly close to term so the placenta may appear to be low until fairly late. As long as there isn't significant vaginal bleeding you shouldn't worry. ...Read more

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What kind of incision for delivery of singleton in transverse lie with anterior placenta previa? Will low transverse cut risk hemorrhage/uterine tear?

What kind of incision for delivery of singleton in transverse lie with anterior placenta previa? Will low transverse cut risk hemorrhage/uterine tear?

Hyst'omy MANDATED: hello Annie-_777 I am not an OB GYN but I have had a lot of experience which tells me that a lower abdominal incision (Pfannen-Stiel) is a better incision in almost all situations. This situation of a transverse lie and an anterior placenta praevia is a very hazardous situation because you need the baby out and the cord clamped within seconds of opening the uterus so choose a very skilled surgeon. ...Read more

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Why does placenta previa cause cramping and bleeding?

Why does placenta previa cause cramping and bleeding?

Placenta previa: Usually bleeding associated with placenta previa is painless. Rarely, if there is separation of placenta and blood is collected retroplacentally, it can be painful. ...Read more

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Do a lot of people get placenta previa?

1 in 200: Placenta previa occurs in approximately 1 in 200 pregnancies. It is a condition where the placenta blocks the opening to your cervix. Placenta previa is usually diagnosed by routine ultrasound. Or, women may experience painless vaginal bleeding, prompting evaluation. Placenta previa is usually followed by your doctor during pregnancy. Delivery must occur via c-section. ...Read more

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What are the most common symptoms of placenta previa?

Painless bleeding: The most common symptom of placenta previa is painless vaginal bleeding. If you suspect you might have a placenta previa, an ultrasound can tell you whether you have one or not. ...Read more

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Can a placenta previa totalis able to deliver normally?

Can a placenta previa totalis able to deliver normally?

NO: I believe only safe option is a planned cesarean section. That way no blood from infant & placenta will be lost and infant will not endure any risk. ...Read more

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15 weeks and just diagnosed with placenta previa. Should I be worried?

Optimistic: The uterus has a lot of growing to do from 15 weeks on. The placenta can migrate away from the cervix as the uterus grows. If you experience vaginal bleeding you should see your doctor but you should be optimistic that the condition will very likely resolve on its own. ...Read more

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If abroad with a placenta previa, better to fly to us or stay in shanghai?

Depends: This depends on how far along you are in the pregnancy and the degree of placenta previa. Your OB would answer this better based on your history and exam. ...Read more

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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


Dr. Marvin Ott
16 doctors shared insights

Preterm Delivery (Definition)

A preterm delivery is defined as any delivery of a newborn less than ...Read more