Level Up Your Outdoor Space: 2-Level Deck Designs

A 2-level deck, also known as a two-level deck, is a type of vascular access device used for intravenous (IV) therapy. It consists of two catheters placed one inside the other, with the tip of the inner catheter (katanoware) resting within the vein. This medical device is often used in patients requiring long-term IV access, such as those undergoing chemotherapy or dialysis.

2-level decks provide several advantages over single-lumen catheters. They allow for concurrent administration of different drugs or fluids, reduce the risk of bloodstream infections, and offer a larger blood return for laboratory tests compared to single-lumen catheters.

The Structure of a 2-Level Deck

Understanding the anatomy of a 2-level deck is crucial for healthcare professionals to ensure proper insertion, maintenance, and removal. A typical 2-level deck comprises of two components:

The Outer Catheter

The outer catheter, also called the dialysis catheter, provides access to the central circulation. It is the larger of the two catheters and is usually inserted first. Once in place, it serves as a guide for the insertion of the inner catheter.

During insertion, the outer catheter is typically placed in the internal jugular, subclavian, or femoral vein. The position is then confirmed using chest x-ray or ultrasound before the insertion of the inner catheter. The outer catheter is usually filled with heparin to prevent clot formation and is secured in place with a sutureless device or a securement device.

The Inner Catheter (Katanoware)

The inner catheter, or katanoware, is a smaller, softer catheter that is placed inside the outer catheter. It extends beyond the tip of the outer catheter and into the vein, providing additional lumen for blood withdrawal or infusion. The inner catheter is usually inserted through the lumen of the outer catheter under fluoroscopic guidance.

Once in place, the inner catheter is also filled with heparin to prevent clot formation. It is then secured to the skin using a suture or a securement device. The inner catheter is typically removed first when the 2-level deck is no longer needed, followed by the outer catheter.

Insertion and Removal of a 2-Level Deck

The insertion of a 2-level deck is a specialized procedure that should be performed by trained healthcare professionals. It is usually carried out in a sterile environment, under ultrasound or fluoroscopic guidance.

Once the procedure is complete, the 2-level deck must be maintained properly to prevent complications. This includes daily flushing with a heparin solution, regular dressing changes, and proper hand hygiene before and after each use. The 2-level deck should be removed as soon as it is no longer needed to prevent the risk of infection and other complications.

Care and Maintenance of a 2-Level Deck

The care and maintenance of a 2-level deck involve several key steps. Daily flushing with a heparin solution is crucial to prevent clot formation and maintain patency. The dressing should be changed regularly, preferably when there is no risk of contamination, and the insertion site should be visually inspected for signs of infection or phlebitis.

Furthermore, any lines connected to the 2-level deck should be secured properly to prevent dislodgement. It is also important to ensure that no medications that are incompatible with heparin are administered through the 2-level deck, as this can cause precipitate formation and occlude the catheter.

Potential Complications and Management

Several complications can arise from the use of a 2-level deck, including phlebitis, thrombosis, catheter-related bloodstream infections, and catheter malpositioning. It is important to recognize these complications early and manage them appropriately.

For instance, phlebitis and thrombosis may require thrombolysis or catheter removal, while catheter-related bloodstream infections necessitate a course of antibiotics and, in severe cases, catheter removal. Catheter malpositioning may require repositioning or replacement of the catheter.

In light of these potential complications, it's essential for healthcare professionals to be well-versed in the proper insertion, maintenance, and removal of a 2-level deck. Ongoing education and training are key to ensuring patient safety and optimal outcomes. Understanding the structure, insertion, care, and potential complications of a 2-level deck is not only valuable for healthcare professionals but also for patients and their families to make informed decisions about their care.