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Peri appt at 32 weeks

kelliwillkelliwill
in Multiples
We saw the peri this morning for a growth scan.  Baby B is bottom down and the lower or presenting twin (still) and is measuring 3 lbs. 5 oz.  Baby A is head down and measuring 4 lbs 2 oz.  This is the largest discrepancy they have had.  The peri said that it's 16% difference and that it is still in the okay range.  We will go back for another growth scan in two weeks.  I was surprised and hoping that they would each be at 4 lbs by now.....but I guess if he is not worried, I shouldn't be either.  I am hoping that in two weeks they will be closer.  Anyone else have a weight difference at the end after being so close through the whole pregnancy?  
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Re: Peri appt at 32 weeks

  • blairsgirlblairsgirl
    Yes.  I went to the MFM at 35 weeks at they did a growth scan.  They were estimating them to be a pound and change apart.  Up to that point, they were only a few ounces apart.  I ended up having an emergency c/s that night due to pre-e.  When they were born Sofia was a little over a pound bigger than Ava.  Both babies were fine.
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  • kelliwillkelliwill
    Thank you for responding.  We are naming one of our girls Ava too.....I love it!!
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  • Temp159135562506975Temp159135562506975 member
    around 32w mine were the exact same weight (via US)... and at birth at 38w1d they were 2lbs apart.... so you just never know.
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  • jacobandcrystaljacobandcrystal member

    Well, I think that actually is almost a 20% difference  (53 ounces and 66 ounces), but I believe TTTS isn't a worry until there's a 25% difference AND a discrepency in amniotic fluid.  Do you know what your amniotic fluid levels were?

    Our girls had measured the exact same at 26 weeks (1 lb. 13 oz.)  and by 29 weeks they had a 15% difference (3 lb. 4 oz. and 2 lb. 12 oz.). I e-mailed my peri a few times to make sure they were okay at that point.  One big factor working in our favor was that their amniotic fluid was almost exactly even, so he wasn't concerned with the change in weights.

    I'm sure if your doc wasn't worried then everything is fine!!  I'm the same way though, since there's only one placenta I'm constantly in a state of worry about whether they're sharing nicely in there : )

     

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  • kelliwillkelliwill

    He said that the fluid was okay and that there is a margain of error with the measurements.  He said A's margin of error (the larger one) is 10 and B's is 8, so that made 16% difference.  I don't know exactly how that is calculated.  He said it's not TTTS and that they wouldn't worry about it until 20%, but it made me nervous.  He also checked the cord of Baby B and said that all looked good.  I will feel better when we go in two weeks and see what they are measuring then.  It's nerve wracking!!! 

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  • jacobandcrystaljacobandcrystal member
    imagekelliwill:

     He said A's margin of error (the larger one) is 10 and B's is 8, so that made 16% difference.  I don't know exactly how that is calculated.

    I had no idea that they actually know the numbers for margins of error!!  I always assumed it was just a general "margin of error" to account for possible wrong measurements.  I wonder how they figure it out... and I wish they'd actually explain all of this to us so that we don't go home in a panic.

    That's just crazy because we're both expecting identical girls, close in due dates, our girls used to measure the same and now have a 15-16% size difference!  I think you're my pregnancy twin ; )

     

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