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heartbeats and ultrasound question


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  #1  
May 27th, 2011, 05:52 AM
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so i'm 17 weeks tomorrow; a few weeks ago during my u/s the tech says identical boys, but on the one picture the dr said, dr suggested boy/girl. their heartbeats are almost the same right around 143-145. when i check at home with the doppler it's the same.

i think the u/s tech got a bad picture maybe...but just wondering if any of you that have b/g twins have different heart rates or should i think they are the same sex since hr is same...

my next appt in thursday, but it's impossible not to wonder during the meantime.
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  #2  
May 27th, 2011, 10:16 AM
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b/g or not there should always be a variation with the heartbeats. You can't be sure that you aren't picking up the same twin if their heartbeats are not about 10 beats apart. (I've spent quite a bit of time in hspt, non stress tests, etc so I'm getting to know the drill A good heart rate is between 130 and 160 and with twins should be about 10 beats difference
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  #3  
May 27th, 2011, 11:37 AM
Celry's Avatar Platinum Supermommy
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In the beginning, my kiddos had very different heart rates. When we were doing NSTs toward the end, they were always very close. It was hard to make sure we had both kids and not one of them twice.
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  #4  
May 27th, 2011, 12:18 PM
tgc219's Avatar Super Mommy
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My b/g twins' heartrates varried. Most of the time they were different, but once or twice they were actually the same . I don't think heartrates are a good way to determine gender though. Might be an old wives tale?
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  #5  
May 27th, 2011, 02:19 PM
tundrababy's Avatar Mega Super Twin Mommy
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I have b/b frats and generally they were always within a couple beats of each other, so much so that we did u/s at every appt instead of doppler up until 24+ wks until we could physically tell which baby was where.
I guess I would be more interested to know, if the tech say ID boys, assuming she meant she saw only one placenta and now your OB says b/g, is he thinking the one placenta is fused or another placenta was found?? In any event, sounds like things are going good, KUP!!
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  #6  
May 27th, 2011, 04:44 PM
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My b/g are sometimes the same, and sometimes different. It's really not accurate to go by heartbeats.
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  #7  
May 27th, 2011, 05:48 PM
1+twins's Avatar Platinum Supermommy
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Mine were always 1-3 beats different. They tried and tried with the NSTs but they always were that way so they determined by doing an internal U/S that that was just how they were. So I don't think it matters really. I think it can vary from pregnancy to pregnancy. Sorry, didn't help much did I?
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  #8  
May 27th, 2011, 06:08 PM
Austinsmama2007's Avatar Mega Super Mommy
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So far my b/g twins have had a little different hb's. Not by much though. The past few NST's they have been fairly close though.
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  #9  
May 27th, 2011, 07:47 PM
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My identical girls' heart rates were always within a few beats from each other. The u/s tech would always have another tech come in to verify and they checked their heart rates at least 3-4 times. My dr. never used a doppler because they were so close.
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  #10  
May 29th, 2011, 01:36 PM
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My identical boys were always different.
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  #11  
June 15th, 2011, 08:48 PM
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My identical boys would sometimes have identical heartbeats and other times be off by about 10.
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