IVC ultrasound

Revision as of 17:55, 21 September 2013 by Mcamilon (talk | contribs) (Measurements)

Background

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

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