Hand hygiene versus additional non-sterile gloves and gowns use to prevent sepsis in preterm infants colonized with multi-resistant drug bacteria: the study protocol of the cluster-randomized, cross-over, non-inferiority BALTIC trial.
Kirstin Faust, Clara Haug, Julia Pagel, Reinhard Jensen, Anja Stein, Ursula Felderhoff-Müser, David Frommhold, Kirsten Brebach, Christian Wieg, Georg Hillebrand, Barbara Naust, Esther Schmidt, Lutz Koch, Susanne Schmidtke, Arne Simon, Michael Zemlin, Sascha Meyer, Christopher Scholzen, Natascha Köstlin-Gille, Christian Gille, Ann-Carolin Longardt, Manuela Kärlin, Mirjam Lusga, Wolfgang Göpel, Manuel Krone, Stefanie Kampmeier, Franziska Strecker, Dennis Nurjadi, Inke R König, Egbert Herting, Jan Rupp, Christoph Härtel
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Abstract
Background: Infections are highly relevant for neonatal mortality and long-term morbidities in survivors. Therefore, it is an urgent need to optimize and evaluate infection prevention and control (IPC) strategies. Several infection outbreaks in German neonatal intensive care units (NICUs) required rapid responses by hospitals and improved future preparedness. As a consequence, German authorities recommended weekly colonization screening on NICUs. This screening aims to detect multidrug-resistant organisms (MDRO) and bacteria with high transmissibility. According to these guidelines, infants colonized with multiresistant gram-negative (MRGN) bacteria with in-vitro resistance to piperacillin and cephalosporins (2MRGN) should be cared wearing non-sterile gloves and gowns in addition to standard hygiene precautions. Whether these extended IPC measures have an individual benefit for infants or contribute to the prevention of infection outbreaks has not yet been scientifically proven. This study aims to evaluate the effect of hand desinfection as compared to hand desinfection + gloves and gowns (barrier care) for the care of 2MRGN colonized infants in NICUs on infection and transmission rates through a multicenter, cluster randomized controlled trial (BALTIC study, Barrier protection to lower transmission and infection rates with Gram-negative 2-MRGN in preterm children).
Methods: 12 participating NICUs were randomly allocated to two trial arms: receiving the intervention "standard precautions with a special focus on hand desinfection" or control (standard precautions "plus" barrier care) for the care of 2MRGN positive infants. Cross over was performed after 12 months for another 12 months per site. Primary outcome was the rate of healthcare-associated (HA) Gram-negative bloodstream infections. Secondary outcomes included transmission rate with screening relevant bacteria, overall rate of clinical and culture-proven infections, number of antibiotic cycles and desinfectant use. Regular trainings and hygiene audits are standardized co-interventions.
Benchmarking results: According to our single center data, 9.3% of NICU-treated infants are colonized with 2MRGN during their hospital stay. BALTIC randomized the first center in October 2020 and finished data collection including close-out monitoring in January 2024. Data analysis will be completed in May 2025.
Conclusions: BALTIC should contribute to better evidence on the effectiveness of hand desinfection and extended barrier precautions in critically ill newborns. Further benefits include comprehensive multi-center data collection on MDRO colonization dynamics, an improved awareness on IPC strategies and establishment of network platforms including antimicrobial stewardship programs.
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