When the course deviates from expected: Misplacement of an epicutaneo-caval catheter in a neonate.

Central venous access, a common and essential component of the care of the critically ill neonate, is associated with complications such as infection, thrombosis, and bleeding. Unintentional arterial cannulation of a venous catheter is a rare but potentially dangerous complication. In the report, we describe the accidental cannulation of an artery with an epicutaneo-caval catheter in an extremely low birth weight infant. We discuss the physical and radiological findings that raise the suspicion of an arterial placement of a catheter, the diagnostic tools to confirm the misplacement, the potential complications, and strategies to prevent it.