PREGNANCY-BIRTH Messages for March, 2000: Re: amniocentesis 34 years old vs. 35

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Re: amniocentesis 34 years old vs. 35

From: anonymous (anonymous@obgyn.net)
Sat, 25 Mar 2000 15:05:41 -0600 (CST)

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At Wed, 10 Mar 1999, Carolyn wrote: >
>Having been where you are, I can tell you exactly why 35 is the "magic"
>age. At 35, the chances of having a baby with DS is approximately the
>same as the chances of losing a baby due to an amnio...supposedly around
>1/200. However, different Drs have different "success" rates. My Dr
>had been doing amnios for 7 years and said that he had one
>miscarriage(but the amnio was done at 17 weeks and she miscarried at 22
>weeks). I acutally had two amnios, one at 16 weeks which, after two
>sticks, was unsuccessful (couldn't get a draw) and one at 21 weeks(which
>was successful).
>
>The triple screen, while being fairly reliable for determining neural
>tube defects, is less reliable for screening for DS, with a high rate of
>women put in a "higher than normal" risk category.
>
>I'm interested in hearing what the Drs say about the triple screen and a
>targeted level 2 as I was told at my level 2 that the 60% of the
>physical signs of Downs Syndrome are missed in an US. Also, what is
>thought to be a soft sign (like a shorter than expected femur) could
>just mean a shorter than expected baby, not a DS baby. So...I'm
>curious...as always.
>
>--
>Carolyn
>
>At Wed, 10 Mar 1999, Nancy wrote:
>>
>>I will be 34 at the time of delivery of my second child. There is no
>>family history of Down's syndrome or Spina bifida. I am interested in
>>knowning whether there is a major difference in the rates for these
>>disorders between the ages of 34 and 35 when most Drs. would recommend
>>amniocentesis. How arbitrary is the 35 age limit? We would not be
>>interested in having a child with such a defect. Is amniocentesis
>>advisable at age 34? Is the triple screen test combined with a targeted
>>ultrasound a good option for a 34 year old woman rather than the more
>>evasive amniocentesis?
>>Thank you
>>Nancy
>

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