Also used for blood draws and monitoring central venous pressure (CVP). Medications, IV solutions, lipids, and colloids. The right internal jugular and subclavian valves are the most direct paths to the right atrium via the superior vena cava. Medications, IV solutions, more viscous fluids like TPN and lipids, colloids, and blood products if distal lumen is not open. Anatomy and Physiology There are three possible sites for CVL placement in adult patients: namely, the internal jugular, femoral, and subclavian. Medications, IV solutions, and blood products if other lumens are not open. distal end of the triple lumen catheter has three outlets, the proximal opening. This may vary by manufacturer, but typically each lumen of the catheter is a different color, its own separate line, and used for designated purposes. triple-lumen percutaneous central venous catheter (CVC). When I worked in the ICU, patients were often receiving multiple medications and fluids at once, so a triple lumen central catheter, and knowing the function of each port, was essential.
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