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Questions for Dr. Kennedy
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ultra sound
Posted by: Ellen
Date: May 9, 2001 1:24 AM

Is there a danger to ultrasound? I have a friend that is having one every month and she is barely 3 months pregnant. I had read that it is dangerous to the unborn to continually have them, let alone even one. I am talking about the regular ultra sound and not the knew dangers of the current one that they do in three dimensions.

RE: ultra sound
Posted by: Ron Kennedy, M.D.
Date: May 9, 2001 3:25 AM

There have been many concerns about the safety of ultrasound. Because ultrasound is energy, the question becomes "What is this energy doing to my tissues or my baby?" There have been some reports of low birth weight babies being born to mothers who had frequent ultrasound examinations during pregnancy. The two major possibilities with ultrasound are as follows:

(1) development of heat - tissues or water absorb the ultrasound energy which increases their temperature locally, and (2) formation of bubbles (cavitations) - when dissolved gases come out of solution due to local heat caused by ultrasound. However, there have been no substantiated ill-effects of ultrasound documented in studies in either humans or animals. This being said, ultrasound should still be used only when necessary (i.e. better to be cautious).

This Thread has been closed


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