RT Journal Article T1 Risk Factors for Multidrug-Resistant Gram-Negative Bacteria Carriage upon Admission to the Intensive Care Unit. A1 Fernandez-Martinez, Nicolas Francisco A1 Carcel-Fernandez, Sheila A1 De la Fuente-Martos, Carmen A1 Ruiz-Montero, Rafael A1 Guzman-Herrador, Bernardo R A1 Leon-Lopez, Rafael A1 Gomez, Francisco Javier A1 Guzman-Puche, Julia A1 Martinez-Martinez, Luis A1 Salcedo-Leal, Inmaculada K1 Antibacterial drug resistance K1 Critical care K1 Epidemiology K1 Gram negative bacteria K1 Infection control K1 Risk factors AB Multidrug-resistant Gram-negative bacteria (MDR-GNB) are microorganisms that have acquired resistance to extended-spectrum antibacterials and constitute an emerging threat to public health. Although carriers are an important source of transmission in healthcare settings, data about risk factors for MDR-GNB carriage are limited. Therefore, we aimed to identify risk factors for MDR-GNB carriage upon intensive care unit (ICU) admission and to optimise screening strategies. We conducted a case-control study. Admissions of adult patients to the ICU of a 1000-bed hospital during a year were included. We collected sociodemographic, clinical and microbiological data and performed a multivariate logistic regression model. A total of 1342 patients resulted in 1476 episodes of ICU admission, 91 (6.2%) of whom harboured MDR-GNB (38.5% women; median age 63.9 years). The most frequently isolated pathogens were Escherichia coli (57%) and Klebsiella pneumoniae (16%). The most frequent resistance mechanism was production of extended-spectrum beta lactamases. MDR-GNB carriage was associated to liver cirrhosis (OR 6.54, 95% CI 2.17-19.17), previous MDR-GNB carriage (OR 5.34, 1.55-16.60), digestive surgery (OR 2.83, 1.29-5.89) and length of hospital stay (OR 1.01 per day, 1.00-1.03). Several risk factors for MDR-GNB carriage upon admission to a high-risk setting were identified; the main comorbidity was liver cirrhosis. PB MDPI YR 2022 FD 2022-01-15 LK http://hdl.handle.net/10668/21018 UL http://hdl.handle.net/10668/21018 LA en NO Fernández-Martínez NF, Cárcel-Fernández S, De la Fuente-Martos C, Ruiz-Montero R, Guzmán-Herrador BR, León-López R, et al. Risk Factors for Multidrug-Resistant Gram-Negative Bacteria Carriage upon Admission to the Intensive Care Unit. Int J Environ Res Public Health. 2022 Jan 18;19(3):1039 DS RISalud RD Apr 13, 2025