What is the key benefit of using a tunneled central line compared to a non-tunneled line?

The key benefit of using a tunneled central line compared to a non-tunneled line is that it has a longer duration of use. Tunneled central lines are specifically designed for long-term access, such as for patients who require ongoing treatments like chemotherapy or frequent blood draws. The tunnel created under the skin provides a protective pathway for the catheter, which helps to reduce the risk of complications associated with prolonged use, including dislodgement and kinking.

This design not only allows the line to remain in place for months or even years but also facilitates patient comfort and reduces the frequency of catheter replacements. Because tunneled lines are secured under the skin, they are less likely to be inadvertently pulled or disturbed, which can help maintain their patency and functionality over time. This characteristic makes them particularly advantageous for patients needing extensive vascular access, markedly contributing to their overall treatment regimen.

While other factors like infection risk and maintenance are important in different contexts, the longevity and reliability of tunneled lines are their standout advantages compared to non-tunneled lines, which are typically used for short-term access and may need more frequent replacement.