What is the role and preferred location for an umbilical venous catheter (UVC) and where should the catheter tip end?

• A. UVC provides central venous access; tip should reside at the inferior cavoatrial junction (approximately 3 cm below the diaphragm in term neonates; adjust for weight/gestational age); confirm radiographically.
• B. UVC provides arterial access; tip should be at the left atrial appendage.
• C. UVC provides peripheral venous access; tip should be in the hepatic portion of the portal vein.
• D. UVC is used for feeding only; tip location is not radiographically confirmed.

Answer: (A)

Umbilical venous catheters are used to gain central venous access in neonates who need medications, fluids, blood products, or total parenteral nutrition. The catheter tip should lie at the inferior cavoatrial junction—the line where the inferior vena cava meets the right atrium—approximately 3 cm below the diaphragm in term neonates, with the depth adjusted for the infant’s weight and gestational age. Radiographic confirmation is essential to verify the position before use and to avoid malposition that could injure the liver or heart. The other ideas mischaracterize UVCs as arterial or peripheral access or as feeding-only devices, and they omit the need for radiographic tip verification.