Cardiac ultrasound: Difference between revisions
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==Measurements== | ==Measurements== | ||
Aorta | ===Aorta=== | ||
*Normal aortic root is <3.8 cm (parasternal view w/ dot pointing to Lt arm) | *Normal aortic root is <3.8 cm (parasternal view w/ dot pointing to Lt arm) | ||
===Classic Ultrasound Findings For Critically Ill Patients=== | |||
{| class="wikitable sortable" | |||
|- | |||
! Disease !! Cardiac !! IVC !! Lung (Phased Array) !! Lung (Linear) | |||
|- | |||
| [[MI]] || Focal WMA<br/>Mod/Poor squeeze || ↑ || NL or B-lines || Sliding | |||
|- | |||
| [[Pericardial Effusion and Tamponade|Tamponade]] || RA collapse with filling<br/>RV collapse with filling || ↑ || NL || Sliding | |||
|- | |||
| [[PTX]] || NL or Hyperdynamic || ↑ || Lung point<br/>Consolidated lung || Absent lung sliding | |||
|- | |||
| [[Sepsis]] || Hyperdynamic squeeze || ↓ || NL (see pneumonia) || Sliding | |||
|- | |||
| [[Pneumonia]] || Hyperdynamic squeeze || NL or ↓ || Unilateral B-lines || Sliding | |||
|- | |||
| [[Congestive heart failure|Decompensated HF]] || Mod/Poor squeeze || ↑ || Bilateral B-lines || Sliding | |||
|- | |||
| [[PE]] || RV > LV<br/>McConnell's sign || ↑ || NL or Unilateral B-lines || Sliding | |||
|} | |||
==Pericardial Effusion== | ==Pericardial Effusion== | ||
Revision as of 16:08, 7 March 2015
Background
- Only ED US when probe marker will be pointing to the left (parasternal views)
- Use phased array probe
Technique
- Parasternal Long
- Pointer to the L hip, probe at L 3rd/4th intercostal space adjacent to sternum
- Use to visualize global function and r/o pericardial effusion/tamponade
- Can evaluate mitral valve, aortic valve, aortic root, LV squeeze
- Parasternal Short
- Pointer to L shoulder, probe at L 3rd/4th intercostal space adjacent to sternum
- Tip: obtain parasternal long view, then rotate probe 90 degrees
- Use to evaluate LV squeeze, R ventricle
- R heart strain = dilated R ventricle
- Apical 4 chamber
- Pointer to Right, usually below nipple
- Use to visualize global function (Left and right ventricle, squeeze)
- Subxyphoid
- Pointer to Right, subxyphoid with probe pointed toward head
- Use liver to as acoustic window to visualize heart
- Suprasternal
- Pointer at 12 o'clock (cephalad) and place in sternal notch
- Move probe inferior and to the left to visualize aortic arch
- Rotate probe clockwise for further image optimization
- Can evaluate for aortic dissections/aneurysms and aortic stenosis/regurg.
Measurements
Aorta
- Normal aortic root is <3.8 cm (parasternal view w/ dot pointing to Lt arm)
Classic Ultrasound Findings For Critically Ill Patients
| Disease | Cardiac | IVC | Lung (Phased Array) | Lung (Linear) |
|---|---|---|---|---|
| MI | Focal WMA Mod/Poor squeeze |
↑ | NL or B-lines | Sliding |
| Tamponade | RA collapse with filling RV collapse with filling |
↑ | NL | Sliding |
| PTX | NL or Hyperdynamic | ↑ | Lung point Consolidated lung |
Absent lung sliding |
| Sepsis | Hyperdynamic squeeze | ↓ | NL (see pneumonia) | Sliding |
| Pneumonia | Hyperdynamic squeeze | NL or ↓ | Unilateral B-lines | Sliding |
| Decompensated HF | Mod/Poor squeeze | ↑ | Bilateral B-lines | Sliding |
| PE | RV > LV McConnell's sign |
↑ | NL or Unilateral B-lines | Sliding |
Pericardial Effusion
- For cardiac tamponade, look for bowing of RA or RV wall inward during diastole
- Can be used to identify pocket of fluid for pericardiocentesis
See Also
Source
Sonosite Uptodate
