IV Cannula vs IV Catheter: Understanding the Differences
In the medical field, intravenous (IV) access is a fundamental procedure used for administering fluids, medications, and blood products directly into the bloodstream. Two common devices used for this purpose are the IV cannula and the IV catheter. While these terms are often used interchangeably, they refer to different types of medical devices, each with its unique characteristics and applications. Understanding these differences is crucial for medical professionals to ensure appropriate use in patient care. IV Cannula An IV cannula , often simply referred to as a cannula, is a small, flexible tube that is inserted into a vein to provide access for intravenous therapy. Typically made of plastic, an IV cannula consists of a hollow needle with a thin, flexible tube that remains in the vein once the needle is withdrawn. The primary function of an IV cannula is to serve as a conduit for the infusion of fluids and medications. IV cannulas are categorized by size, which is deter...