Difference between revisions of "IVC ultrasound"

(technique)
(dif views)
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*Use phased array probe
 
*Use phased array probe
 
*In subxyphoid cardiac view (epigastric), fan probe inferiorly to view the IVC draining into the right ventricle
 
*In subxyphoid cardiac view (epigastric), fan probe inferiorly to view the IVC draining into the right ventricle
 +
*In the RUQ, slide the probe posteriorly to view the IVC draining into the RV
  
 
==Measurements==
 
==Measurements==

Revision as of 22:12, 1 January 2014

Background

  • Inferior vena cava ultrasound measurements
  • >50% collapse correlates with CVP <8
  • Unclear if able to use in intubated patients

Technique

  • Use phased array probe
  • In subxyphoid cardiac view (epigastric), fan probe inferiorly to view the IVC draining into the right ventricle
  • In the RUQ, slide the probe posteriorly to view the IVC draining into the RV

Measurements

IVC  % Collapse during inspiration^ CVP
<1.5cm >50% 0-5
1.5-2.5cm >50% 5-10
1.5-2.5cm <50% 10-15
>2.5cm Little phasicity 15-20

^Measure ~2cm from IVC/RA junction

  • Can ask patient to sniff or valsalva to evaluate collapse

See Also