Which statement describes available lumen configurations for central venous catheters?

• A. Single, double, or triple lumen
• B. Only single lumen
• C. No lumen options
• D. Quad-lumen only

Answer: (A)

Lumen configuration refers to how many separate channels a central venous catheter has, which determines how many fluids or medications can be infused or drawn from at once. The typical options you’ll encounter are single, double, or triple lumen catheters. A single-lumen catheter carries one channel, suitable for a straightforward infusion. A double-lumen catheter provides two independent channels, allowing separate infusions or a combination of infusion and blood withdrawal without mixing. A triple-lumen catheter adds a third independent channel for additional simultaneous therapies. Quad-lumen catheters exist for highly complex needs, but they’re less common; the standard description of available configurations usually lists single, double, or triple lumens. So the statement reflecting these common configurations best describes what’s available.