What does the cuff (tunnel) of an external tunneled catheter inhibit?

What does the cuff (tunnel) of an external tunneled catheter inhibit?

• A. Air embolism
• B. Migration of organisms
• C. Catheter breakage
• D. Pneumothorax risks

Answer: (B)

The cuff (or tunnel) of an external tunneled catheter is specifically designed to inhibit the migration of organisms. This is achieved by providing a barrier that encourages the formation of a fibrous tissue connection between the surrounding tissue and the catheter, creating a localized zone of decreased bacteria penetration. As a result, it plays a crucial role in reducing the risk of infection at the catheter insertion site, which is a significant concern in patients with CVADs. The design of the cuff enhances stability of the catheter and minimizes movement, further protecting it from potential contamination. This protective feature is particularly important because it helps maintain the integrity of the site, thus contributing to the overall safety and effectiveness of the catheter.

The cuff (or tunnel) of an external tunneled catheter is specifically designed to inhibit the migration of organisms. This is achieved by providing a barrier that encourages the formation of a fibrous tissue connection between the surrounding tissue and the catheter, creating a localized zone of decreased bacteria penetration. As a result, it plays a crucial role in reducing the risk of infection at the catheter insertion site, which is a significant concern in patients with CVADs.

The design of the cuff enhances stability of the catheter and minimizes movement, further protecting it from potential contamination. This protective feature is particularly important because it helps maintain the integrity of the site, thus contributing to the overall safety and effectiveness of the catheter.