Carol,  I noticed that you measured the brachial diastolic pressure.  Did 
you measure the brachial systolic pressure with a doppler?



On Fri, 31 Jan 1997 [log in to unmask] wrote:

> In less than 2 months a patient has a difference in his ABI of >.2, waveforms
> look the same from both exams, has anyone else run into this scenerio?
> 
> on 10-22-96   BP's                   R = 146/60           L= Fistula
>           amplitude                           13 mm                25  mm
>          ankle Pressures                    115                    134
>             ABI                                   0.79                   0.92
> 
> on 1-9-97      BP's                    R =  190/80          L = Fistula
>            amplitude                           12 mm               26 mm
>           ankle Pressures                    112                   128
>               ABI                                  0.59                  0.67
> 
> 
> I explained that the difference in the index is due to the increase of
> brachial artery pressure by 44mmHg for the January exam.  It was explained to
> me that this is not the reason, as the arm and the leg blood pressures are
> relational and does not account for this.  (This was by the tech and one of
> our MD's)
> 
> So, now I am utterly confused..........................if the formula has an
> increase in the brachial artery this will decrease the ABI if the ankle
> pressure stays the same.  I was just going on simple math.  How else would
> you explain this???????????????
> 
> Carol Gallupe RVT RCT
> Vascular & Thoracic Assoc.
> Bangor ME
> 
> 
> 

Steven J. Knight BSc. RVT
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Vascular Diagnostic Laboratory
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