Which site is NOT typically used for pulmonary artery catheterization?

The radial artery is not typically used for pulmonary artery catheterization because this procedure involves accessing central venous structures to guide the catheter through the right heart and into the pulmonary artery. The radial artery, located in the forearm, is primarily used for procedures such as arterial blood gas sampling and for monitoring blood pressure, not for placing central venous catheters.

In contrast, other sites like the internal jugular (IJ) vein, femoral vein, and right axillary vein are commonly utilized for this procedure. The IJ vein offers direct access to the central venous system and is often preferred due to its anatomical position, facilitating catheter placement. The femoral vein is also a suitable access point for central lines, particularly in emergent situations or when there are difficulties with other sites. The right axillary vein can serve as an alternative, providing another pathway to reach the central venous system. Understanding the anatomical and procedural aspects of these sites is crucial for successful pulmonary artery catheterization, which makes the radial artery an inappropriate choice for this specific procedure.