Troubleshooting
- No flashback (not in the vein) - try advancing further or pulling back and inserting slightly medially or laterally
- Flashback but no blood coming out (penetrated too far, vein has collapsed) - pull back slightly, adjust the angle of the needle against the skin, pull back and try again
- Bright red blood that is pulsating out (arterial sample) - remove the needle and apply pressure for at least 3 minutes
- Haematoma - remove the needle and apply pressure to the area.
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