ULTRASOUND Messages for December, 1997: Re: EMBRYO DOPPLER

Re: EMBRYO DOPPLER
From: Terry J DuBose (tjdubose@juno.com)
Fri Dec 26 14:42:55 1997

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I want make one other comment on this thread. The following message appears to be suggesting using Doppler to hear the embryonic heart beat. Now we know that color Doppler does increase the energy more than just pulsed Doppler. And all Doppler is a little more energetic than regular real-time and M-mode. HOwever, remember that OB labs have been using Doptones to hear the heart beat on fetuses for years. These small machines are not pulsed but are continious wave (CW) machines, and put out a good bit of energy even if they are small in size.
The question is are you following the principle of ALARA (As Low As Reasonably Achievable)? When asked about why we can't hear the heart beat I always reply, this is a imaging lab, we see the heart beat. Then I point it out to the mother. That seems as satisfying as hearing it. Should work just as well as hearing for anxiety or bonding or for what ever use Doppler is used. I still see no reason to use Doppler on the early embryo, except in very rare or difficult cases. M-mode will always document a beating heart in the hands of experienced sonographers. Peace, Terry J. DuBose
On Thu, 25 Dec 1997 18:50:01 -0500 "Mary C. Scarboro" <case@mediaone.net> writes: >Frog
>I tend to agree with you re: HR via doppler prior to 8 weeks MA. I
>will on
>occasion very briefly doppler heart tones for maternal/paternal
>psychosocial
>indications, i.e.... anxiety, bonding...or something, otherwise if I
>need a
>rate for some reason m-mode is my first preference. I asked the same
>question a few years ago when I realized it was standard practice in
>many
>facilities to utilize doppler for routine FHR (EHR)s at 5+ to 7 weeks.
> I
>never was able to find any articles or professional guidelines at that
>time
>to confirm my reservation, however this was about 5 years ago. I just
>can't
>believe it prudent to opt for the exposure of doppler over m-mode at
>such a
>critical stage of development without some sort of indication.
>Research
>and or psychosocial are the only indications I can rally. Hope you
>get some
>support on this issue.
>

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