RPVI-venous Flashcards
(18 cards)
what is abnormal for refill time with ppg
<20 seconds because refill with reflux
how do you evaluate reflux with tourniquets?
if normal with tourniquet above the knee then reflux above
failure of above knee and below knee then deep vein insufficiency
will ppg work with dvt
NO
what is the dvt protocol
compression
color
spectral
is acute thrombus hypo or echogenic?
hypo echoic then become echogenic
what is the insufficiency criteria for duplex
deep >1 sec
superficial system >.5
perferator >.35 seconds
how to tell if reflux?
flow after the augment is in an opposite direction
e
right renal artery usually more anterior
What are normal ranges for the abdo arteries
prox aorta 23
mid 20
distal 15
CIA 10
Abdo >3 aneurismal or if focal dilation >1cm
what does the aorta waveform look like above renals? below the rentals
monophasic
multiphasic
sma is high resistance
celiac is low resistance
sma fasting high resistant more triphasic
once post prandial get mono phasic and low resistance
same for IMA
ima usually mono phasic (notch does touch line) but high pulsatility
3`
what are criteria for >70% for celiac and sma and ima?
> 200cm/s
275 cm/s
200cm/s
how do you tell hepatic veins or portal veins?
HV orientation north-south and branch points point to diaphragm
HV< echogenic then PV
HV squiggly (2 steps forward, one step back from atrial kick). blood flow down
PV more continuous flow carrying blood into the liver same direction as arteries
PV east-west
what does buds chiari syndrome do
hv or ven cava obstructed with thrombus or timor. flow is then abnormal
<50 cm/sec abnormal
cirrhosis
can have thickened GB from ascites
nodules in liver
free fluid
what is normal tips flow
135-200 should be >50 turbulent flow hepatofugal flow (into the liver) HA PSV 80-130 MOV PSV 30-60
tips stenosis
filling defect
MPV 200
velocity change >50 cm/s
