Doctor insights on:
Does Placenta Previa Cause Preterm Labor
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
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
Cesarean by 36-37w.: Placenta previa can lead to preterm labor, so I would recommend prelabor (i.e. Shceuled) cesarean section by 36-37 weeks. If placenta accreta is also suspected, delivery should be by 34-35 weeks with Betamethasone administration and immediate puerperal hysterectomy without attempt at placental delivery! All this shoudl be done in a large hospital. The infant should do well regardless. ...Read more
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
Can marginal placenta previa cause placental abruption? What are the statistics on marginal previa moving after 20 weeks?
Cervix and placenta:
Will move apart
as a balloon expands, (uterus), points on the balloon move apart, this will likely occur as the uterus grows, if no bleeding, little risk of harm. Ask your doctor to be sure.
Previa can create a type of partial abruption, along the edge of the attachment. ...Read more
Can placenta previa (abrupto @34wk but wasn't seen til 36w) cause postpartum issues? Excessive irregular bleeding, pelvic sensitivity? I am 7month pp
With anterior complete placenta previa and 2 bleeds (1 warning, 1 massive) what are the chances of the placenta shifting with the uterus after 24wks? And possible cause of constant dull aches and jolts in pelvis area. Also have short CX
MFM evaluation: Consider asking for a referral to a maternal fetal medicine specialist. Your situation sounds quite high risk especially when you use phrases like massive bleeding. Your doctor may want to consider keeping you in the hospital now that the baby has reached viability. The chances of previa resolution will vary depending on the exact location and will vary from person to person ...Read more
Coordinated care: When there is need to taper or stop medications acting on the brain or nervous system, women who are pregnant should ask OB provider about a referral to maternal-fetal medicine specialist and/or neurologist or psychiatrist who prescribed the medication. Then all of the doctors can consider risks and benefits for mom and baby before making a change. ...Read more
Preterm labor: Premature labor is caused by inflammation or infection. Magnesium has been used for the treatment of premature labor, but multiple studies have shown that it doesn't really stop contractions. Its use for this indication is declining. Withdrawing an ineffective medication can't cause premature labor. ...Read more
Is sex safe in the third trimester? Can it cause preterm labor? What positions are best? Is oral sex ok?
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 more
Largely unknown...: Pretem labor is a blanket/umbrella diagnosis for a wide spectrum of conditions that result in fetal stress and uterine contractions. Such conditions include: infections, poor growth, placental failure, bleeding, too much amniotic fluid, multifetal pregnancies, trauma, fetal anomalies causing hydrops or heary failure, etc. Most of the time there is no diagnosis and preterm labor is "idiopathic". ...Read more
I had steriod shot during my preterm labor. Now I'm 34wks and feeling my baby is way active compare my last 2pregnancy. Is there any cause of the shot?
I had a micro preemie at 24 weeks due to a uterine infection that caused preterm labor. How likely am I to have another preemie?
Varies: If it was truly due to an infection and that infection is treated and cured, you would be at no higher risk than usual. However, if there were other contributing circumstances, like early cervical shortening, any abnormalities of uterus, then the risk could be a lot higher. It's an excellent thing to talk to a maternal-fetal medicine specialist about and what you can do pre-pregnancy to prevent. ...Read more
Is there fact to too much rubbing belly in first trimester cause increased body temperature that may provoke miscarriage or preterm labor? Doc said so
No: Rubbing the belly surface won't increase one's body temperature inside. The skin may get a little warmer where one rubs. Nothing unusual happens to the baby, because the baby is inside, at a stable temperature. So, if any baby problems arise, they are not due to rubbing the belly surface. ...Read more
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
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
Nothing: Nothing can be done for partial placenta previa at 20 weeks. Most of those have grown out by 28 weeks. ...Read more
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