RT info:eu-repo/semantics/article T1 Prediction of poor outcome in clostridioides difficile infection: A multicentre external validation of the toxin B amplification cycle A1 Reigadas, E. A1 Alcalá, L. A1 Marín, M. A1 Martin, A. A1 Muñoz, P. A1 Eiros Bouza, José María A1 Sánchez Arroyo, Rafael J. A1 Azcona Gutiérrez, José Manuel A1 García García, Concepción A1 Fernández Caso, Belén A1 García Blanco, Alicia A1 Fernandez Pittol, Mariana A1 Álvarez Martínez, Míriam José A1 Orellana Miguel, M. Ángeles A1 Nuño, Enrique Muñoz A1 Álvarez Paredes, Ledicia A1 Megías, Gregoria A1 López Medrano, Ramiro A1 Foz, Carlos Fuster A1 Leiva, José A1 Fernández-Alonso, Mirian A1 Vega, Silvia A1 Hernando, Susana A1 Frutos, Mónica de A1 Trujillo, Gloria A1 López, Joan A1 Molina de Diego, Araceli N. A1 López Hontangas, José Luis A1 Guerrero Vadillo, María K1 Infección por clostridioides difficile K1 Reaparición K1 Predictores K1 Ciclo de amplificación K1 Cuantificación de toxina b K1 2420 Virología AB Classification of patients according to their risk of poor outcomes in Clostridioides difficile infection (CDI) would enable implementation of costly new treatment options in a subset of patients at higher risk of poor outcome. In a previous study, we found that low toxin B amplification cycle thresholds (Ct) were independently associated with poor outcome CDI. Our objective was to perform a multicentre external validation of a PCR-toxin B Ct as a marker of poor outcome CDI. We carried out a multicentre study (14 hospitals) in which the characteristics and outcome of patients with CDI were evaluated. A subanalysis of the results of the amplification curve of real-time PCR gene toxin B (XpertTM C. difficile) was performed. A total of 223 patients were included. The median age was 73.0 years, 50.2% were female, and the median Charlson index was 3.0. The comparison of poor outcome and non–poor outcome CDI episodes revealed, respectively, the following results: median age (years), 77.0 vs 72.0 (p = 0.009); patients from nursing homes, 24.4% vs 10.8% (p = 0.039); median leukocytes (cells/μl), 10,740.0 vs 8795.0 (p = 0.026); and median PCR-toxin B Ct, 23.3 vs 25.4 (p = 0.004). Multivariate analysis showed that a PCR-toxin B Ct cut-off <23.5 was significantly and independently associated with poor outcome CDI (p = 0.002; OR, 3.371; 95%CI, 1.565–7.264). This variable correctly classified 68.5% of patients. The use of this microbiological marker could facilitate early selection of patients who are at higher risk of poor outcome and are more likely to benefit from newer and more costly therapeutic options. PB Elsevier SN 1075-9964 YR 2020 FD 2020 LK http://uvadoc.uva.es/handle/10324/42918 UL http://uvadoc.uva.es/handle/10324/42918 LA eng NO Anaerobe, 2020, vol. 61, 102079 NO Producción Científica DS UVaDOC RD 17-jul-2024