JEANETTE ENGQVIST / SCIENCE PHOTO LIBRARY JEANETTE ENGQVIST / SCIENCE PHOTO LIBRARY
Central venous catheter, computer illustration. A central venous catheter, also known as a central line, is a catheter inserted into a large vein, such as in the neck, chest or groin. It is used to administer medication or fluids that are unable to be taken by mouth or would harm a smaller peripheral vein.
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