How accurate is fundal height?

I went in on June 13th for an u/s and baby was measuring over 39 weeks, even though I was only 35 weeks at the time. The u/s tech actually had to double check all the measurements because she thought I was due that day rather than July 13th. I know that late term u/s are not very accurate when determining baby's size, so I didn't put too much stock into it. However, at my last appointment (38 weeks), my fundal height was measuring 45.5 cm. Should I be concerned? Is this reason enough to schedule a repeat c-section? My gut says no, but what do I know?

Re: How accurate is fundal height?

  • What does your doctor say?  All the measurements - US and fundal height can be very inaccurate.  I also have to say that a heavy baby, doesn't mean a big head.  My baby was very long.  
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  • My ob guessed my baby to be about 6.5 lbs at 36 weeks, at 39 weeks when she was born she wasn't even 6 lbs.
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  • There are a lot of things that can throw off fundal height measurements, like baby's position.


    The thing that I would want them to check is the fluid level, though.  I wouldn't be worried about a big baby as much as I would be worried about having too much fluid or something like that.

    Mama to Elliot (11.09.08) and Jude (09.01.11)
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