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Question for midwives about previa & avoiding accreta

742 Views 12 Replies 7 Participants Last post by  Midwife Kris
Hi, I am 19 weeks & was dx with previa at 13 w. So far I have not checked on it & have had no bleeding. I had an appt last week where I was told that my risk of accreta was 20 % b/c of having one c/s almost 3 years ago & b/c of the previa. I read about both & it was recommended by one mw online to add fish oil & vit E to create a strong placenta that will hopefully/probably move. But then I just read in the SCH thread that Pamamidwife said a lot of E will make the placenta get a better grip on the uterus. I hope its not trying to get a grip in the scar!

Pamamidwife, or anyone else, do you think I should drop the extra E? Do you have any dietary suggestions or any stories of avoiding accreta & good examples of previas moving? Needless to say, I'm freaking out a little, but then I wouldn`t rush to the store if there was a 20% chance of snow. The funny thing is i was thinking of VBAC,but who knows at this point.
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No ideas?
Has anyone heard of an accreta that didnt require hysterectomy? Any knowledge you all can share about supplements & placentas in general, I appreciate it so much.
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A 13 week previa will nearly always move up as the pregnancy progresses. If you were to get it checked out again, they may be able to tell you that it is still low but more posterior so it would not grow into your old incision. That would mean another u/s though.
I assist with emergency sections and I have seen several acretas. I have seen a couple that almost resemble a window into the uterus... you could actually see the baby's head before the doc made the incision in the uterus. If these women had delivered vaginally, they nearly definately would have had major complications but none of them ended up needing hysterectomies. One did need a balloon inflated in her uterus to stop bleeding but that is it.
I don't know about the vit E issue at all, actually.

I have seen a couple of accretas, one which did not require hysterectomy, but did involve a lot of bleeding, transfusion, repeat d&c, and a lot of close watching.
Actually the 2nd birth that I witnessed ever was a repeat cesarean x 6, where mom came in labor at 35 weeks and so had a repeat urgently in the middle of the night, and then bled and bled and bled. She had 6 units of blood in the operating room, and was initially closed after surgery, but had an emergency hysterectomy a few hours later. I actually almost gave up the idea of attending births altogether after that one. It turned out she had a form of accreta called placenta percreta, where the placental tissue had invaded all the way through the muscle layer of the uterus to the serosa layer on the outside. Apparently really rare, as even at the tertiary care center where I trained, no one had ever seen one before.
Most previas diagnosed in the first trimester do migrate and turn out not to be a problem. That early, they may not have even been able to tell if the placenta was posterior or anterior, but a posterior placenta would be much less likely to cause trouble. You probably should have a repeat ultrasound at 20 weeks, and again at 28 if all is well to evaluate placental position. If you have any bleeding, generally you should have a scan right away - and do not let anyone do a cervical exam as there is a risk of causing worse bleeding if there is a true previa over the cervix.
I wish you the best. Just doesn't seem fair that you should have to deal with any other drama in your birthing, does it?
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Can't comment on vit E, but maybe this'll be uplifting. The only study I was ever able to find on placenta previa persistance: http://www.greenjournal.org/cgi/content/full/99/5/692

Hopefully it's still a valid link. Diagnosed at 13 weeks, it's incredibly likely it'll move. It's later diagnoses (20 weeks +) which carry lower resolution rates.

I was diagnosed with complete at 16 weeks and 18 weeks by two different U/S techs. By 24 weeks, it had completely migrated -- something like 4.6 cms which by the tech and the OB's comments never happens (the amount of the "migration" in that short time frame, that is). 2cms is generally sufficient for vaginal birth by the most conservative of OBs/MWs. You've alot of time to go yet to get it to "migrate" those 2cms. Most of your growth is coming up shortly, so in all likelihood, you'll be fine.

Best of luck!!!
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Thank you so much ladies! It helps to hear that it still has time to move & that accreta doesn`t have to mean hysterectomy.

It does suck to have a lot of drama in birthing, but I try to focus on the positive & my kids are so worth it. I am also rh sensitized so I will start having a bunch of u/s soon, luckily I have a low titer & my last sensitized baby came out fine. Serial u/s bothers me less than multiple amnios , which was how they monitored rh mamas only 6 years ago.

My placenta was definitely seen to be anterior at 13 w, so it was/is on top of the scar. I`ll have another u/s at 20 w to check again. Even if its still there, I think when the belly really gets big it will start to move.
20% for the accreta...that seems quite high. Hmmm! Can your Dr. show you the research supporting that?

I DO know that the more babies you have via c-birth the higher your chance of such occurring. Are you going to try for a VBAC?

Mary

p.s. Dr. Jen....are you the same from Lactnet?

Mary and also lactnetter....I believe we exchanged emails when Caroline Rose was born.
doula mary, I can`t try for a vbac with a previa obviously,but if it moves I'm open to one, but I don`t have the best history of vag. birth. I also can`t be induced after a section and since my baby will be isoimmunized he won`t be in past 37 weeks to keep him from the higher chance of hemolytic disease at the last few weeks of pregnancy.

Its hard to believe I was once a Up`er and homebirther. I`m only writing here now b/c I miss the positive attitude of midwifery as compared to the doom & gloom in standard OB care. I needed to hear some positive outcomes!
doula mary - just briefly highjacking liseux's thread to say, yep, that's me!
Thanks to all who gave me their thoughts on previa. Good news! It moved up at 20 weeks, what a relief.
I'm so glad!!! We've been discussing accreta on another list I'm on and the stats can be rather scary. What a relief for you!
Thank you Beth. My doctor had me totally freaked out about accreta and now I can just concentrate on other worries.
I was happy to read here that it doesn`t always end in hysterectomy though.
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Quote:

Originally Posted by liseux
Hi, I am 19 weeks & was dx with previa at 13 w. So far I have not checked on it & have had no bleeding. I had an appt last week where I was told that my risk of accreta was 20 % b/c of having one c/s almost 3 years ago & b/c of the previa. I read about both & it was recommended by one mw online to add fish oil & vit E to create a strong placenta that will hopefully/probably move. But then I just read in the SCH thread that Pamamidwife said a lot of E will make the placenta get a better grip on the uterus. I hope its not trying to get a grip in the scar!
There is always the possibility that a low-lying placenta will appear to migrate higher on the uterine wall as it expands, moving further away from the cervix as it happens. I don't believe supplements will encourage an abnormal attachment with the placenta. If you're going to have a follow-up ultrasound to recheck the placenta's position, ask your doctor to assess proper implantation at the same time for reassurance.
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