A new study suggests a simple change could make IV therapy more reliable for newborns in the neonatal intensive care unit (NICU). Researchers found that using longer IV catheters instead of shorter ones led to fewer failures. That means fewer painful needle sticks and fewer delays in giving babies the fluids and medicines they need.
This matters because many late preterm and term babies need short-term IV therapy. They may need antibiotics, fluids, or nutrition through a vein for a few days. When an IV fails, staff must start over. That can be stressful for families and risky for fragile newborns. Short peripheral catheters are the traditional choice. But they can clog or leak, forcing an unplanned removal before treatment is done.
But here’s the twist: longer peripheral catheters are not new. They have been used more often in recent years. Yet it was unclear if they truly worked better for short-term use in newborns. This study compared the two types while accounting for a key detail. Sometimes doctors change a catheter on purpose for medical reasons. That is not a failure. The researchers treated those cases as competing events, so the results reflect true failure risk.
Think of a short IV like a narrow straw in a cup. If the straw gets kinked or clogged, you cannot deliver the drink. A longer IV is like a longer, sturdier straw that reaches deeper into the cup. It may resist kinks and keep the flow steady. In the body, a longer catheter can sit in a larger vein segment, which may lower the chance of blockage or leakage.
The study included 197 newborns born at 34 weeks or later and weighing at least 1,500 grams. All were getting their first venous access device. About one-third received a long peripheral catheter; the rest got a short one. The team followed each baby until the device was removed. They tracked whether the catheter failed early due to clogging or leaking, or whether it was changed on purpose for treatment reasons.
Excluding those intentional changes, failure was much less common with long catheters. About 21% of long catheters failed, compared with 44% of short ones. Put another way, there were about 62 failures per 1,000 device-days with long catheters, versus 146 per 1,000 with short ones. The statistical models, which account for competing risks, showed long catheters cut the hazard of failure roughly in half.
This does not mean every newborn should get a long catheter automatically.
The findings suggest long catheters may be a more reliable option for completing planned short-term therapy in selected neonates. In practice, that could mean fewer reinsertions and less discomfort. But the decision should be individualized. Clinicians will weigh factors like vein size, the type of fluid or medicine, and the expected duration of therapy.
The study has important limits. It was done at a single center and looked back at medical records. The sample size was modest, and the babies were mostly late preterm and term, not extremely premature. The researchers did not assess thrombotic complications, which can be a concern with longer devices. Future studies should evaluate safety outcomes and test these results in other hospitals.
What happens next? Larger, multi-center studies are needed to confirm these findings and to examine safety in more detail. Hospitals may also consider training and protocols to ensure long catheters are placed and maintained correctly. If the results hold, long peripheral catheters could become the preferred choice for short-term IV therapy in many newborns.