European Experts Issue Landmark Guidance on Ultrasound-Guided Central Lines in Newborns

Placing a central venous catheter in a premature infant weighing less than a kilogram is one of the most delicate procedures in modern medicine. The target veins may be barely two millimeters wide, the anatomy shifts with every breath, and the margin for error is measured in fractions of a millimeter. Now, a multidisciplinary team of European specialists has issued a formal recommendation designed to make this high-stakes procedure safer, more standardized, and fundamentally ultrasound-driven from start to finish. The document, published in Pediatric Research as the fourth in a series of ten recommendations from the European Society for Paediatric Research and the Neonatal European Vascular Access Team, lays out in unprecedented technical detail how ultrasound should be used before, during, and after the insertion of centrally inserted central catheters in neonates.

The recommendation, developed by the Pediatric and Neonatal Vascular Access Special Interest Group of the European Society for Paediatric Research together with NEVAT, addresses two closely linked procedures: ultrasound-guided cannulation of deep central veins and the tunneling of catheters beneath the skin to secure them in place. Its authors include anesthesiologists, neonatologists, pediatric intensivists, and vascular access nurse specialists from hospitals across Austria, Italy, the Netherlands, Spain, Belgium, and beyond. That breadth of expertise is deliberate. Vascular access in newborns has long been fragmented across specialties, with anesthesiologists, surgeons, and neonatal nurses each bringing different habits, different equipment preferences, and different definitions of success. The new document argues that this variation itself is a patient safety hazard, and that only standardized, protocol-driven practice can close the gap between the best-performing units and the rest.

At the heart of the recommendation is a simple but transformative principle: no needle should enter a neonatal vein without ultrasound guidance, and no catheter should be considered properly placed until its tip position has been verified. The authors emphasize that ultrasound plays an essential role in every phase of insertion and evaluation of both centrally inserted central catheters, often abbreviated CICC, and femorally inserted central catheters, known as FICC. Before any puncture, the operator is expected to perform a systematic ultrasound survey of the candidate veins. For the upper body, this means assessing the internal jugular, subclavian, and brachiocephalic veins; for the lower body, the femoral and iliac vessels. Structured pre-insertion assessment protocols such as the rapid central vein assessment and the rapid femoral vein assessment, both developed by members of the same expert community, provide a repeatable checklist for this survey, documenting vein patency, diameter, compressibility, and surrounding anatomy before a single instrument is opened.

The technical core of the document concerns the supraclavicular approach to the brachiocephalic vein, an access route that has quietly revolutionized neonatal central line placement over the past decade. The brachiocephalic veins are formed by the junction of the internal jugular and subclavian veins and run a short, relatively straight course toward the superior vena cava. In adults they are routinely used for central access, but in neonates they were long considered too small and too deep to target safely. Ultrasound changed that calculus. With a high-frequency linear probe positioned just above the clavicle, an experienced operator can visualize the right brachiocephalic vein in cross-section, advance the needle in real time under the probe, and watch the guidewire enter the vein on screen. The same supraclavicular window then allows the operator to track the catheter tip as it descends toward the cavoatrial junction, providing immediate confirmation of central tip position without a separate radiograph.

The published evidence supporting this approach in the smallest patients is substantial. Case series have documented ultrasound-guided supraclavicular cannulation of the brachiocephalic vein in infants weighing as little as 680 grams, and retrospective analyses have reported hundreds of successful cannulations in neonates and preterm infants with encouraging safety profiles. One study even suggested that the supraclavicular approach may reduce central line-associated bloodstream infections in preterm infants, possibly because the catheter can be tunneled away from the insertion site and secured more effectively. The new recommendation consolidates this experience into formal guidance, complete with illustrated steps for estimating the required intravascular catheter length, trimming the catheter to the correct size, and cannulating the right brachiocephalic vein in a 680-gram neonate. The inclusion of such granular procedural detail reflects a deliberate editorial choice: the authors want the document to function as a practical manual at the bedside, not merely as a statement of principle.

Site selection receives equally rigorous treatment. The recommendation adapts the zone insertion method, originally developed for peripherally inserted central catheters in adult upper arms, to the peculiar geography of the newborn. Extrapolated ZIM zones map out the cervicothoracic and inguinal-femoral regions, identifying which skin insertion points offer the best combination of vessel depth, vein diameter, and a straight catheter trajectory to the desired tip position. The logic is anatomical: a catheter that enters the vein at a shallow angle, travels a straight path, and avoids crossing joints or sharp vessel bends is less likely to cause mechanical complications such as vessel perforation, catheter malposition, or thrombosis. In a neonate, whose veins may grow along with the child over weeks of intensive care, preserving vessel integrity for future access is not a luxury but a necessity.

Tunneling, the second pillar of the recommendation, is presented as a key defense against infection and accidental dislodgement. By creating a subcutaneous tunnel between the venous entry point and a distant skin exit site, the operator increases the distance bacteria must travel to reach the bloodstream and anchors the catheter more securely in fragile, thinly keratinized neonatal skin. The document also addresses modern securement and dressing strategies, including cyanoacrite tissue adhesive, which has emerged in recent neonatal studies as a component of bundles that reduce catheter-related complications, and subcutaneously anchored sutureless fixation devices. These may sound like minor technical refinements, but in a population where a single line failure can mean repeated painful procedures, prolonged hospitalization, and increased infection risk, the cumulative effect of such refinements is clinically significant.

Tip location, the final verification step, receives its own detailed discussion. The recommendation describes structured ultrasound protocols for confirming that the catheter tip sits at the cavoatrial junction, the optimal position where the superior vena cava meets the right atrium. It also reviews the intracavitary electrocardiography method, in which a saline-filled catheter acts as a lead that records the characteristic electrical signature of the atrium, allowing real-time tip confirmation. Recent consensus work and comparative reviews have examined whether intracavitary ECG or real-time ultrasound should be the primary verification tool in neonates, and the new document frames both as complementary techniques within a structured protocol for tip navigation and tip location. The overarching message is that a chest radiograph alone, taken after the fact, is no longer an acceptable standard for confirming neonatal central line position when real-time alternatives exist.

The authors frame the entire package as a bundle, drawing on the seven-step SIC and SIF protocols designed to minimize complications of centrally inserted and femorally inserted central catheters respectively. Each step, from pre-insertion vein assessment through site selection, insertion, tip navigation, tip location, securement, and post-insertion evaluation, is specified in a way that can be audited and taught. The recommendation also aligns with broader international guidance on ultrasound-guided vascular access and with contemporary infusion therapy standards, situating neonatal practice within a coherent evidence framework rather than leaving it as an isolated pediatric exception. The authors acknowledge the contributions of parent organizations, including the European Foundation for the Care of Newborn Infants and the Global Foundation for the Care of Newborn Infants, reflecting a growing recognition that families have a stake in how these procedures are performed and communicated.

What makes this recommendation potentially viral in the world of neonatology is its insistence that excellence in vascular access is not an innate gift of certain surgeons or a matter of institutional tradition, but a learnable, protocolized skill that any well-trained team can deliver. The work was not externally funded, and the authors declare no competing interests, positioning the document as a purely professional consensus. If units across Europe and beyond adopt its standards, the practical consequences could be measured in fewer failed first attempts, fewer misplaced catheters, fewer bloodstream infections, and fewer needle sticks for the smallest and most vulnerable patients in the hospital. For a field where a millimeter of precision can determine whether a 700-gram infant thrives or suffers a preventable complication, the arrival of a unified, ultrasound-first European standard marks a genuine turning point in the care of newborns.

Subject of Research: Ultrasound-guided central venous catheter insertion and tunneling in neonates

Article Title: Ultrasound-guided central vascular access and device tunneling: neonatal European vascular access team—ESPR recommendation 4

Article References: Breschan, C., Pittiruti, M., van der Lee, R., Oulego-Erroz, I., Werther, T., Piersigilli, F., Barone, G., Ouwehand, T., Van Eenoo, S., Hugill, K., van Rens, M., on behalf of the Pediatric and Neonatal Vascular Access SIG of the ESPR and NEVAT, Van Der Lee, R., van Eenoo, S., van Rens, M., Schwaberger, B., Debuf, M.-J., Milan, A., Yousef, N., … Tuna, M. L. (2026). Ultrasound-guided central vascular access and device tunneling: neonatal European vascular access team—ESPR recommendation 4. Pediatric Research. https://doi.org/10.1038/s41390-026-05463-w

Image Credits: AI Generated

DOI: 10.1038/s41390-026-05463-w

Keywords: neonatology, ultrasound, central venous catheter, brachiocephalic vein, ESPR, vascular access, preterm infants, catheter tunneling, tip location, patient safety, supraclavicular approach, Pediatric Research