PREGNANCY-BIRTH Messages for January, 1999: Re: How to Interpret Ultrasound Results?

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Re: How to Interpret Ultrasound Results?

From: Kelly Shanahan, MD (anonymous@obgyn.net)
Mon, 25 Jan 1999 22:57:54 -0600 (CST)

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In reply to: Dee: "Amniotic Fluid loss"

>I'm not a doctor or a sonographer but have had many many many ultrasounds
>scans during my 5 pregnancies so I feel *qualified* to answer. :)
>
>BPD = biparietal diameter (this is a measurement of the head, sort of across
>the head at the widest part above the ears)
>FL = femur length (length of the long bone in the leg, the thigh bone)
>HC = head circumference (distance around the head)
>AC = abdominal circumference (distance around the abdomen)
>
>All of these measurements are in centimeters as indicated. The weeks noted
>after each of these on your results indicate the gestational age of your
>baby based on these measurements. For example, let's take the femur length.
>This says 22 weeks +/- 2.3 weeks. This means that based on the measurement,
>your baby falls in the range of an average baby at the gestational age (from
>first day of last menstrual period) of 22 weeks BUT it could be off as much
>as 2.3 weeks (2 weeks 3 days) either way. According to my Syntex Pregnancy
>Calculator wheel, an LMP of 8/17/98 shows you being 22 completed weeks
>pregnant on Jan 19th (or 22 weeks 1 day, it's sort of in the middle) so the
>femur measurement is *right on* with your dates.
>
>Why your doc said the baby is big is beyond me because the measurements are
>in line with how far you are in your pregnancy. But like I said, I am not a
>doctor and perhaps one of our OBGYN.net doctors here can explain this
>better.
>
>I hope this helps you a bit until a medical professional responds.
>
>Congratulations on your pregnancy! We look forward to a baby announcement
>around the end of May :)
>
>Sincerely,
>Mary Shoup
>Pregnancy & Birth Coordinator
>mary.shoup@obgyn.net

Gosh, Mary -- who needs us docs when you're around with such complete and accurate answers ;-)

--
Kelly Shanahan, MD, FACOG
S. Lake Tahoe, CA

note: Opinions here are for educational purposes only. This information is not intended to supplant the need for you to consult with your own physician. It cannot take the place of a face to face consultation and examination.
Sorry, but private e-mails will not be answered -- especially now that I have a new baby to take care of!!

Next message: Kelly Shanahan, MD: "Re: molar pregnancy - waiting time until next conception"
Previous message: Kelly Shanahan, MD: "Re: Moving to a higher elevation"
In reply to: Dee: "Amniotic Fluid loss"

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