A straightforward, hands-on approach to Portal Vein Pulsed Wave Doppler.
Physiologic and pathologic waveforms
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#doppler #PWD #echofirst #POCUS #VexUs @ButterflyNetInc
1/ 7 PHYSIOLOGIC
Physiologic flow should be always antegrade and hepatopetal ( towards trasducer). Could be monophasic or gently ondulating,
In doppler it should be red (get the smallest angle posible).
To Remember:
Fugal: Away
Petal: Toward
Normal velocity: 16-40 cms
2/ 7 Hepatic vein ( mainly in atrial contraction ) gets transmitted through the hepatic sinusoids wich causes cardiac variability of portal waveform , and is accentuated in thin subjets.
3/ 7 PATHOLOGY
4/ 7 Increased pulsatility.
Is defined as a pulsatility index > 0.5.
5/ 7 it could be either arterial or venous.
6/ 7 Hepatofugal and slow Flow.
7/ 7 Absent Flow.
Resources:
RT:)
@hepocus @NephroP @TaotePOCUS @POCUSpeek @ABCDEcografia @Sthanu5 @NuvancePOCUS @ASARUC1 @SergioVelM @Radiopaedia @Radiologia_HU
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