PREGNANCY-BIRTH Messages for July, 2000: Re: Accuracy of 36 week ultrasound for estimated fetal wt/head circumference

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Re: Accuracy of 36 week ultrasound for estimated fetal wt/head circumference
From: Harvey S. Marchbein, M.D. (anonymous@obgyn.net)
Sat, 1 Jul 2000 21:50:21 -0500 (CDT)

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In reply to: Lisa: "Accuracy of 36 week ultrasound for estimated fetal wt/head circumference"
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Reply: RareEndo: "Re: Accuracy of 36 week ultrasound for estimated fetal wt/head circumference"

At Sat, 1 Jul 2000, Lisa wrote: >
>I had an ultrasound yesterday at 36 weeks to assess fetal size. My
>first ds was born via csection after 17 hours of labor including 2 of
>pushing. I had decided that if they said this baby was less than 7 lbs
>right now I would go for a vbac, over 7 1/2 and I would keep my
>scheduled csection and the grey area inbetween I would decide about
>later! Their estimate was 6lbs 13 oz which I realize can be off by a
>pound or so in either direction

10-15% variability.
>however his head circumference was at
>39.2 weeks. My first ds weighed 9lbs 9 oz at 41 weeks and his head was
>huge.
>
>Anyway, does anyone know the accuracy of measuring head circumference by
>ultrasound at this point in pregnancy?

Head measurements are just that. they can't necessarily predict problems with delivery, as evidenced by recent papers indicating sonography as being less reliable than previously thought with respect to choosing C/S vs. VBAC.
>Thanks in advance!
>
>--
>Lisa
>

-- Harvey S. Marchbein, M.D. FACOG, FACS Great Neck, New York
**Note: Opinions expressed here are for educational purposes only and, as such, do not constitute a physician-patient relationship. This information is not intended to supplant the need for you to consult with your physician prior to choosing therapeutic options and/or interventions.
**Private emails cannot be entertained due to time constraints, consequently no private emails will receive a response.
**Thank you for your understanding ;-)

Next message: Harvey S. Marchbein, M.D.: "Re: Drs. - Seeking your advice! Please help!"
Previous message: Harvey S. Marchbein, M.D.: "Re: Anti-E-Amy"
In reply to: Lisa: "Accuracy of 36 week ultrasound for estimated fetal wt/head circumference"
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Reply: RareEndo: "Re: Accuracy of 36 week ultrasound for estimated fetal wt/head circumference"

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