Glossary of Medical Terms

external right atrial catheter

A thin, flexible tube that is inserted into a vein in the neck or below the collar bone and guided (threaded) into the right atrium of the heart. It is used to give intravenous fluids, blood transfusions, and chemotherapy and other drugs, and for taking blood samples. It avoids the need for repeated needle sticks. An external right atrial catheter is a type of central venous access device.

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