A central venous catheter, also called a central line, is a long, thin, flexible tube used to give medicines, fluids, nutrients, or blood products over a long period of time, usually several weeks or more. A catheter is often inserted in the arm, chest, neck, or groin through the skin into a large vein. The catheter is threaded through this vein until it reaches a large vein near the heart.
(Minkler, 2008)
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