My advice is to consult your manual or your applications specialist to help you
with your specific equipment. Most manuals have reference articles listed
which can be a good place to start.
Since the segmental study is based on comparisons the gain for PVR
waveforms should be standardized throughout the limb (ex. same gain for
thigh, calf and ankle). Likewise, the comparison is made from side to side (ex.
right thigh vs. left thigh).
Gain settings may vary from system to system but the exam principles have
been essentially stayed the same.
It would be very difficult to interpret a study if all of the PVR waveforms were
the same amplitude but it could be done if the reader knew what gain was
used for each waveform.
Jill Myers, RVT
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