What distinguishes a non-tunneled central venous catheter from a tunneled one?

• A. Non-tunneled catheters are inserted under the skin
• B. Non-tunneled catheters are inserted directly into a vein
• C. Non-tunneled catheters have a longer usage period
• D. Non-tunneled catheters are more prone to infection

Answer: (B)

The distinction between non-tunneled and tunneled central venous catheters lies primarily in their method of insertion. Non-tunneled catheters are indeed inserted directly into a vein, commonly through the internal jugular, subclavian, or femoral veins, without any subcutaneous passage. This direct placement allows for immediate access to the venous system for purposes such as medication administration, fluid therapy, or blood draws, making them a valuable tool in acute care settings.

In contrast, tunneled catheters involve a more complex insertion technique where the catheter is threaded under the skin through a tunnel before entering the vein. This creates a subcutaneous track that helps secure the catheter in place and potentially reduces the risk of infection, as the entry point is further from the central circulation.

The other options highlight various attributes that do not accurately differentiate non-tunneled catheters. For example, non-tunneled catheters are not designed to be inserted under the skin, nor are they necessarily intended for long-term use; they usually serve more short-term purposes. Additionally, while non-tunneled catheters can be more prone to infection due to their direct insertion method, this statement does not serve as a defining characteristic in comparison