PREGNANCY-BIRTH Messages for December, 2000: Re: 28 weeks gestation, too much amniotic fluid

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Re: 28 weeks gestation, too much amniotic fluid

From: R. Daniel Braun, MD (anonymous@obgyn.net)
Thu, 21 Dec 2000 22:31:18 -0600 (CST)

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In reply to: Emma: "28 weeks gestation, too much amniotic fluid"
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At Thu, 21 Dec 2000, Emma wrote: >
>I am a little confused and thought maybe someone could help me clear my
>mind. Here is a breif history...
>
>At 22 weeks, upon a visit to the fetal maternal specialist, we learned
>that the fetus has bilateral pyelectasis with each kidney measuring just
>under 1 cm. The amniotic fluid level at this time measured normal. All
>other measurements on the fetus were normal at that time. An
>amniocentisis shows no chromosomal abnormalities and female.
>
>At that time, the plan was to have monthly ultrasound.
>
>At 28 weeks, I had my ultrasound. There was no change in the fetal
>kidneys (still just under 1 cm each). All other fetal body measurements
>were normal. But now there is a problem with the amniotic fluid. The
>Dr. said that it was a little too much, when I asked for clarification,
>he said normal was 14, and I measured 25. I don't know the unit of
>measure he uses. He said it was probably gestational diabetes. I am
>currently waiting on blood test results. He wants me to have another
>ultrasound in 6 weeks.
>
>In sitting at home thinking about things, I began to have second
>thoughts... Is 6 weeks too long to wait to see if the amniotic fluid
>has changed? Is there cause for concern that the increase in fluid could
>be related to the pyelectasis?

There are many causes for too much amniotic fluid. The normal at 28 weeks is 14 PLUS or minus 8. This means the normal range is 6 to 22. This is an index that is measured by measuring the depth of the pocket of fluid in each of the four quadrants of the maternal abdomen and adding them up. Several years ago a study was done to look at whether it was significant if the number was up, but it was not apparent that there was too much fluid just by looking. It turned out that there were no problems if it was just the number that was up. On the other hand if the Dr. looked at the US and said "Holy ....! there's too much water" then those pregnancies had problems.

Gestational diabetes is one cause of too much water and should be looked for. A call to the Maternal Fetal Doc you saw might be in order and might put your mind at ease.

RDB

--
R. Daniel Braun, MD FACOG  FOG

This is for educational purposes only, and is not intended to be replacement or substitute for consultation and examination by an appropriate medical professional.  Due to time constraints, private e-mails cannot be answered.

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In reply to: Emma: "28 weeks gestation, too much amniotic fluid"
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