Consider the following:
Preparation
For preparation:
- Sterile setting, drapes, gloves, etc.
- Seldinger cannula of choice
- Sterile sheath for ultrasound probe
- Standard gel within the sheath and sterile gel outside can use catheterization lignocaine
- Set ultrasound to 10mHz linear probe. Ensure adequate depth.
- Sterile drapes and local anaesthetic
Positioning
Position the patient 30 degrees head-down [10], with little neck rotation and no extension [12]. This maximises venous filling, and removes the risk of air embolism.
Procedure
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Image 2 |
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Image 3 |
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Image 4 |
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Click the images to see larger versions |
The procedural technique for the jugular is as follows:
- Use normal gel inside and sterile gel outside
- Secure with a sterile band
- In cross section, find the vein (80% over or lateral to the artery and compressible)
- Rotate the probe to see the vein in longitudinal section. Check it is still compressible
- Use a local anaesthetic
- Introduce the needle through the skin bevel upwards with transducer in either short or long axis (image 1)
- Watch the needle enter the vein
- When blood has been obtained, feed in the wire (image 2)
- Check the wire is being fed caudally
- Observe progress on the screen
- Check the wire remains in the lumen (in both short and long axis)
- Beware of acoustic shadow
- Feed the cannula over the wire (image 3)
- Secure the line
- Check the line position with a chest x-ray (CXR) (image 4)