Anesthesia Technologist Practice Exam

Which technique is commonly used for inserting a central line?

1. Direct puncture method

2. Seldinger technique

3. Cut-down technique

4. Subclavian method

The correct answer is: Seldinger technique

The Seldinger technique is widely recognized as the standard approach for inserting a central line due to its safety and effectiveness. This method involves the use of a guide wire that is first introduced into the vessel after puncturing the skin. The process begins with inserting a needle into the target vein, which is then followed by threading a flexible guide wire through the needle into the vessel. The needle is subsequently removed, and a catheter is passed over the wire into the vein. Finally, the guide wire is removed, leaving the catheter in place. This technique minimizes the risk of complications such as hematoma or arterial puncture, which can occur with some of the other methods. Additionally, the Seldinger technique allows for the placement of a central line in various anatomical locations, such as the internal jugular or femoral vein, making it versatile and commonly employed in clinical practice. In contrast, while the direct puncture method involves directly inserting a catheter into the vessel without the use of a guide wire, it carries a higher risk of complications. The cut-down technique, which is now less common, involves making an incision to expose the vein before cannulation, resulting in a more invasive procedure. The subclavian method refers to accessing the subclavian