ABSTRACT
The superior vena cava can be catheterized either by puncturing a central vein, such as the subclavian, and advancing the tip of the catheter into the cava, or by inserting a long catheter into the antecubital vein and advancing the tip to the appropriate location. The most commonly used technique for cannulating the superior vena cava is subclavian vein puncture. The jugular vein is another site for central venous catheterization. The external jugular is difficult to cannulate and is easily thrombosed. Internal jugular catheterization has a lower incidence of thrombosis however both approaches lead to difficulties in maintaining an occlusive, sterile dressing at the site of the skin puncture. Care of this "nutritional lifeline" is a very important function of the nurse's role. The principles of asepsis should be clearly understood and practiced to prevent contamination or sepsis at the site of line insertion.
