Difference between revisions of "IVC ultrasound"

(Measurements)
(technique)
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*>50% collapse correlates with CVP <8
 
*>50% collapse correlates with CVP <8
 
*Unclear if able to use in intubated patients
 
*Unclear if able to use in intubated patients
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 +
==Technique==
 +
*Use phased array probe
 +
*In subxyphoid cardiac view (epigastric), fan probe inferiorly to view the IVC draining into the right ventricle
  
 
==Measurements==
 
==Measurements==

Revision as of 02:33, 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

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