Central venous catheters are frequently used in babies in neonatal intensive care units (NICUs)–providing key nutrition, fluids, and medications. But while these catheters are critical for survival, they can also be linked to risks such as deep vein thrombosis.Thromboses can lead to a host of issues, including long-term swelling of the affected limb, pulmonary embolism, longer hospital stays, and mortality.