Central venous catheters are needed in the critical care setting to administer drugs. Three sites are available to gain vascular access: subclavian, internal jugular and femoral. Each site has complications, but there is no randomized controlled study which compared the 3 sites.

The investigators hypothesis is that subclavian catheterization reduces the risk of major complications compared to internal jugular or femoral.

Inclusion Criteria:

• Patient admitted in the Intensive Care Unit
• Requiring Central Venous Catheterization

Exclusion Criteria:

• Patients with only one site available