Comparison of the Proximal Approach and Distal Approach of Axillary Vein Catheterization Under Ultrasound Guidance

The first two attempts via the distal approach will be performed . If the first two attempts failed, the subsequent attempts of venipuncture were performed using the proximal approach

The first two attempts via the proximal approach will be performed . If the first two attempts failed, the subsequent attempts of venipuncture were performed using the distal approach.