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Re: Dr: Fetal measurements for Down's Syndrome

From: Harvey S. Marchbein, M.D. (anonymous@obgyn.net)
Thu, 6 Jul 2000 20:40:29 -0500 (CDT)


Sonographers have such ratios available. As obstetricians, we would not have such data available.

HSM

At Wed, 5 Jul 2000, Laurie wrote: >
>At 15.4 weeks we had a positive triple screen result
>signifying a greater risk for Down's Syndrome. A
>level II ultrasound was scheduled at 18.7 weeks with
>the following results:
>
>BPD: 45 mm 19W4D
>HC: 165 mm 19W1D
>AC: 140 mm 19W3D
>FL: 30 mm 19W2D
>ORB: 31 mm 18W5D
>HUM: 27 mm 18W4D
>
>FL/AC NOT VALID
>HC/AC 1.18
>FL/BPD NOT VALID
>CI 81.1
>
>Estimated Fetal Weight 313g (11oz)
>Calculated age 19W1D
>No nuchal fold measurement was taken.
>
>Note: gestational age of 18.7 weeks is by both a 7 week
>ultrasound dating and conception date. My age is 31.3yrs.
>
>My questions:
>1. What are the ratios based on the femur and humerus
> length that are used to indicate Down's? (I'm looking
> for formulas and normal ranges for my gestational age)
>2. Do these results indicate increased risk for Downs?
>
>--
>Laurie Smith
>

--
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.

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**Thank you for your understanding ;-)




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