Doctor insights on:
Does Placenta Previa Cause Preterm Labor
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 moreSee 1 more doctor answer
It can.: Amniocentesis involves introducing a fine needle into the pregnancy sac to retrieve some amniotic fluid for fetal dna testing. That technique had inherent risks for complications, including preterm labor and preterm premature rupture of membranes. The risk for any of these complications to occur is <1%, but is real and devastating if they do occur. ...Read moreSee 1 more doctor answer
May be both: A previa is usually painless bleeding when the cervix is changing (dilating) causing bleeding from torn vessels being sheared off. It is a type of abruption although any bleeding from a detaching placenta is strictly called an abruption. These are usually away from the cervix and can be associated with cramping, pain, or heavy bleeding. If you have a previa, let your doc know if you bleed. ...Read moreSee 2 more doctor answers
Will vaginal spotting/bleeding stop placenta previa resolves? Does recurrent bleeding in 2nd tr indicate that placenta previa is unlikely to resolve?
2 questions here: Answer to number one, not always. Answer number 2, not always. You will need periodic ultrasound monitoring to follow this issue and, most importantly, if you have significant bleeding, pain, or preterm labor get to hospital right away. Don't plan any trips. You need to be very careful or this may threaten the lives of both you and your baby. Follow your OBs advice and make sure you follow up. ...Read moreSee 2 more doctor answers
Yes it is possible: If it corrects itself completely you should be able to deliver vaginally. Check with your ob. ...Read more
It can: Placenta previa means that the placenta is blocking to cervix, which is the opening from the uterus to the vagina. If the cervix starts to open, heavy bleeding can occur, making it necessary to deliver early to protect mom's health. To reduce the risk of life-threatening bleeding, doctors may deliver early. ...Read moreSee 1 more doctor answer
Distance form cervix: 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 moreSee 1 more doctor answer
Very definitely: Unfortunately, placenta accreta is often diagnosed at the time post delivery when a cotyledon(plug) of placenta is missing or the placenta itself does not detach normally. At that point, aggressive measures to 'detach" the placenta may result in massive hemorrhage and the resultant post apocalyptic diagnosis of placenta accreta. ...Read more
Placenta accreta: A previously undiagnosed placenta accrete may be diagnosed at the time of a cesarean section. This would occur when the OB is trying to remove the placenta but cannot because it is attached (accreta). On the other hand, if the placenta detaches easily, the uterine cavity is always explored so it would be rare to have an attached placenta left behind but a focal placenta accrete could be missed. ...Read more
Massive, brief.: Profuse, life-threatening bleeding occurs suddenly if the placenta is allowed or forced to separate from the uterus in cases of accretism. Unless this is promptly and expertly treated with hysterectomy, maternal death from exsanguination occurs soon. Accreta bleeding is not chronic. Delivery at tertiary hospital/trauma center with large blood bank and mfm gyn oncologist surgical care is needed! ...Read more
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