Aortic ultrasound: Difference between revisions
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*Transverse | *Transverse | ||
**Start in epigastrium (below diaphragm) with indicator at 9 o'clock (aorta on left/IVC on right) | **Start in epigastrium (below diaphragm) with indicator at 9 o'clock (aorta on left/IVC on right) | ||
** | **Use liver as window | ||
** | **Identify vertebral body (shadowing) | ||
** | **Rock/jiggle the probe to move bowel gas from view | ||
** Scan from celiac to bifurcation (near umbilicus) | ** Scan from celiac to bifurcation (near umbilicus) | ||
** Capture and measure the largest diameter | ** Capture and measure the largest diameter | ||
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*Sagittal | *Sagittal | ||
**Rotate indicator to 12 o'clock (aorta on top/vertebra on bottom of screen) | **Rotate indicator to 12 o'clock (aorta on top/vertebra on bottom of screen) | ||
** | **Ensure you're looking at aorta and not IVC (aorta may pulsate/IVC may be compressible) | ||
** Scan from bifurcation to celiac | **Scan from bifurcation to celiac | ||
** Capture and measure sagittal views, including the largest diameter | **Capture and measure sagittal views, including the largest diameter | ||
*Measurements | *Measurements | ||
**Normal is <3cm | **Normal is <3cm | ||
** | **Measure outer wall to outer wall (make sure to include thrombus) | ||
** | **Watch out for saccular aneurysms | ||
==Findings== | ==Findings== | ||
*[[Abdominal Aortic Aneurysm]] | *[[Abdominal Aortic Aneurysm]] | ||
** >3cm diameter (transverse or saggital) | ** >3cm diameter (transverse or saggital) | ||
** | **Look for free fluid | ||
** | **Try to reproduce pain with probe | ||
** | **If clot, confirm flow with doppler | ||
*[[Aortic Dissection]] | *[[Aortic Dissection]] | ||
** | **Double lumen separated by intimal flap | ||
** | **Confirm with doppler | ||
==See Also== | ==See Also== | ||
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==Source== | ==Source== | ||
*Sonosite | |||
[[Category: Cards]] | [[Category: Cards]] | ||
[[Category: Rads]] | [[Category: Rads]] | ||
Revision as of 21:10, 28 January 2012
Technique
- Transverse
- Start in epigastrium (below diaphragm) with indicator at 9 o'clock (aorta on left/IVC on right)
- Use liver as window
- Identify vertebral body (shadowing)
- Rock/jiggle the probe to move bowel gas from view
- Scan from celiac to bifurcation (near umbilicus)
- Capture and measure the largest diameter
- Sagittal
- Rotate indicator to 12 o'clock (aorta on top/vertebra on bottom of screen)
- Ensure you're looking at aorta and not IVC (aorta may pulsate/IVC may be compressible)
- Scan from bifurcation to celiac
- Capture and measure sagittal views, including the largest diameter
- Measurements
- Normal is <3cm
- Measure outer wall to outer wall (make sure to include thrombus)
- Watch out for saccular aneurysms
Findings
- Abdominal Aortic Aneurysm
- >3cm diameter (transverse or saggital)
- Look for free fluid
- Try to reproduce pain with probe
- If clot, confirm flow with doppler
- Aortic Dissection
- Double lumen separated by intimal flap
- Confirm with doppler
See Also
Source
- Sonosite