RT Journal Article T1 Increase in Incidence Rates and Risk Factors for Multidrug Resistant Bacteria in Septic Children: A Nationwide Spanish Cohort Study (2013–2019) A1 Slocker Barrio, María A1 López-Herce Cid, Jesús A1 Bustinza Arriortúa, Amaya A1 Fresán Ruiz, Elena A1 Jordán García, Iolanda A1 De Carlos Vicente, Juan Carlos A1 Morteruel Arizcuren, Elvira A1 García Soler, Patricia A1 Nieto Moro, Montserrat A1 Schüffelmann, Cristina A1 Belda Hofheinz, Sylvia A1 Herrera Castillo, Laura Ximena A1 Uriona Tuma, Sonia María A1 Pinós Tella, Laia A1 Peña López, Yolanda AB The emergence of multidrug-resistant (MDR) bacteria in children is a growing concern, particularly among septic patients, given the need for first-right dosing. Our aim was to determine the incidence rates and factors associated with MDR-sepsis in the pediatric intensive care unit (PICU), using data from the Spanish ENVIN-HELICS PICU registry between 2013 and 2019. The rate of MDR bacteria among septic children ranged between 5.8 and 16.2% throughout this study period, with a significant increase since 2015 (p = 0.013). MDR-gram-negative bacteria (92%), particularly EBL-Enterobacterales (63.7%), were the most frequent causative microorganisms of MDR-sepsis. During this study period, sixteen MDR-sepsis (32.6%) corresponded to intrahospital infections, and 33 (67.4%) had community-onset sepsis, accounting for 10.5% of the overall community-onset sepsis. Independent risk factors associated with MDR-sepsis were antibiotics 48 h prior to PICU admission (OR 2.38) and PICU onset of sepsis (OR 2.58) in >1 year-old children, and previous malnourishment (OR 4.99) in <1 year-old children. Conclusions: There was an alarming increase in MDR among septic children in Spain, mainly by gram-negative (ESBL-Enterobacterales), mostly coming from the community setting. Malnourished infants and children on antibiotics 48 h prior to PICU are at increased risk and therefore require closer surveillance. PB MDPI SN 2079-6382 YR 2023 FD 2023-11-14 LK https://hdl.handle.net/20.500.14352/110759 UL https://hdl.handle.net/20.500.14352/110759 LA eng NO Slocker-Barrio, M.; López-Herce-Cid, J.; Bustinza-Arriortúa, A.; Fresán-Ruiz, E.; Jordán-García, I.; de Carlos-Vicente, J.C.; Morteruel-Arizcuren, E.; García-Soler, P.; Nieto-Moro, M.; Schüffelmann, C.; et al. Increase in Incidence Rates and Risk Factors for Multidrug Resistant Bacteria in Septic Children: A Nationwide Spanish Cohort Study (2013–2019). Antibiotics 2023, 12, 1626. https://doi.org/10.3390/antibiotics12111626 NO 2023 Descuento MDPI DS Docta Complutense RD 9 abr 2025