Adequate Insertion Depth of Dilator During Central Venous Catheterization
Adequate Insertion Depth of Dilator During Central Venous Catheterization
For safe central catheterization, clinicians must be aware of adequate dilator insertion
 depth not to directly dilate the venous wall. The purpose of the study is to find out
 adequate insertion depth of the dilator during central venous catheterization through the
 internal jugular vein with the aid of real-time ultrasonography.
This randomized controlled trial is to compare the distance between the skin puncture site
 and the outside of anterior wall of the internal jugular vein measured by real-time
 ultrasonography with the conventional method which is routinely used in common clinical
 practice.
Inclusion Criteria:

 -  adult patients requiring central venous catheterization through the right internal
 jugular vein

 Exclusion Criteria:

 -  suspicion for infection of the right neck site