critical care medicine
How To Do Peripheral Vein Cannulation, Ultrasound Guided
Warnings and Common Errors for US Guided Peripheral Vein Cannulation
Always maintain ultrasound visualization of the needle tip during insertion. A needle can appear to be within the lumen of the vein without actually puncturing the vein. Continue to advance the catheter within the vein under ultrasound guidance until a pop is felt or a flash of blood is seen in the catheter chamber. 