• Always observe the infant’s face, chest,
and lower extremities during catheter placement.
• Carefully dilate the lumen of the artery before attempting to
introduce the catheter.
• Do not attempt to force the catheter past an obstruction; this
may result in vessel perforation requiring surgical intervention
and blood volume replacement.
• Once secured, never advance nonsterile portions of the catheter
into the vessel. If the catheter needs to be advanced, it should
• Insertion of an umbilical arterial catheter to a “high” position
is associated with fewer complications and is generally preferred.
• Always confirm catheter position on radiograph before use.