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15 Cards in this Set

  • Front
  • Back
tx for pseudoaneurysm
US guided thrombin injection
classic findings associated with pseudoaneurysm (on US)
to and fro flow
yin-yang sign
what does the paraumbilical vein flow into
L portal vein
describe high resistnance vascular waveform
there is no flow during diastole
seen in muscles
describe low resistance vascular waveform
flow is maintained during diastole
end organs (kidneys, brain, etc have this type of flow)
what defines a good systolic upstroke
should be vertical or nearly vertical
nml velocity of a visceral artery
80-120 cm/s
parvus et tardus waveform
subtly angled upstroke
decreased velocity
when is parvus et tardus waveform seen
when you are sampling a BV distal to a stenosis
how do you know you are proximal to a stenosis on US
there will be increased velocity of the bloodflow, but no aliasing
how do you know you are AT an area of stenosis
increased velocity
appearance of aliasing
you have flow to and towards the transducer
on spectral analysis you will see flow above and below the line
mixture of red and blue, wrap around of color
what is spectral broadening
the diastolic waveform is more indistinct
when can you seen spectral broadening
distal to stenosis
how do you know you have at least 70% stenosis of a BV on US
if velocity is >230 cm/s