What are intravenous catheters called that are inserted directly into major veins for extended periods?

Intravenous catheters that are inserted directly into major veins for extended periods are referred to as nontunneled percutaneous venous access devices. This type of catheter is specifically designed to provide access to the central venous system, allowing for the administration of medications, fluids, and nutritional support over more extended durations than peripheral catheters.

Nontunneled catheters are introduced through the skin directly into the vein without any subcutaneous tunneling, making them suitable for short-term use but capable of remaining in place longer than standard peripheral catheters. They are often used in clinical settings where immediate access to the bloodstream is required, such as in intensive care or emergency situations.

This terminology distinguishes them from other types of catheters. For instance, temporary catheters can refer generally to any catheter placed for a short duration, while other types, such as tunneled catheters, involve a different insertion technique and are used for longer-term access. Over-the-needle catheters typically refer to peripheral IV access points, while embedded catheters is not a recognized standard term in this context. Understanding this nomenclature is crucial for effective communication and safe practice in vascular access therapy.