RT Journal Article T1 Bacteremia in Systemic Lupus Erythematosus in Patients from a Spanish Registry: Risk Factors, Clinical and Microbiological Characteristics, and Outcomes. A1 Rua-Figueroa, Iñigo A1 Lopez-Longo, Francisco J A1 Del Campo, Victor A1 Galindo-Izquierdo, Maria A1 Uriarte, Esther A1 Torre-Cisneros, Julian A1 Vela, Paloma A1 Tomero, Eva A1 Narvaez, Javier A1 Olive, Alejandro A1 Freire, Mercedes A1 Salgado, Eva A1 Andreu, Jose Luis A1 Martinez-Taboada, Victor A1 Calvo-Alen, Jaime A1 Hernandez-Cruz, Blanca A1 Raya, Enrique A1 Quevedo, Victor A1 Exposito Perez, Lorena A1 Fernandez-Nebro, Antonio A1 Ibañez, Monica A1 Pascual-Valls, Elia A1 Rua-Figueroa, David A1 Naranjo, Antonio A1 Pego-Reigosa, Jose M K1 Bacteremia K1 Infection K1 Systemic lupus erythematosus K1 Comorbidity K1 Dose-response relationship, drug AB To describe the incidence of bacteremia in a large multicentric cohort of patients with systemic lupus erythematosus (SLE) and their clinical characteristics and to identify risk factors. All bacteremic episodes from the Spanish RELESSER registry were included. Clinical and laboratory characteristics concerning bacteremia and SLE status, as well as comorbidities at the time of infection, were retrospectively collected. A comparison with sex- and age-matched SLE controls without bacteremia was made. A logistic regression was conducted. The study included 114 episodes of bacteremia in 83 patients. The incidence rate was 2.7/1000 patient-years. At the time of bacteremia, the median age was 40.5 (range: 8-90) years, and 88.6% of patients were female. The Safety of Estrogens in Lupus Erythematosus National Assessment-Systemic Lupus Erythematosus Disease Activity Index was 4 [interquartile range (IQR) 8]; 41% had an SLE flare (66% severe); Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index was 3 (IQR 4). A comorbidity was recorded in 64% of cases. At the time of bacteremia, 88.6% received corticosteroids (68.6% > 10 mg/day) and 57% immunosuppressors. Gram-negative bacilli, most frequently Escherichia coli (29.8%), caused 52.6% of the episodes. The bacteremia-related mortality was 14% and bacteremia was recurrent in 27.2% of cases. A dose-response relationship was found between corticosteroids and bacteremia risk. In the multivariate analysis, these factors were associated with bacteremia: elevated creatinine (OR 1.31, 95% CI 1.01-1.70; p = 0.045), diabetes (OR 6.01, 95% CI 2.26-15.95; p 10 mg/day) and 57% immunosuppressors. Gram-negative bacilli, most frequently Escherichia coli (29.8%), caused 52.6% of the episodes. The bacteremia-related mortality was 14% and bacteremia was recurrent in 27.2% of cases. A dose-response relationship was found between corticosteroids and bacteremia risk. In the multivariate analysis, these factors were associated with bacteremia: elevated creatinine (OR 1.31, 95% CI 1.01-1.70; p = 0.045), diabetes (OR 6.01, 95% CI 2.26-15.95; p Bacteremia occurred mostly in patients with active SLE and was frequently associated with severe flares and corticosteroid use. Recurrence and mortality were high. Immunosuppressors, comorbidities, and disease-related damage were associated with bacteremia. PB Journal of Rheumatology Publishing Co. SN 0315-162X YR 2019 FD 2019-03-26 LK http://hdl.handle.net/10668/13838 UL http://hdl.handle.net/10668/13838 LA en NO Rúa-Figueroa I, López-Longo FJ, Del Campo V, Galindo-Izquierdo M, Uriarte E, Torre-Cisneros J, et al. Bacteremia in Systemic Lupus Erythematosus in Patients from a Spanish Registry: Risk Factors, Clinical and Microbiological Characteristics, and Outcomes. J Rheumatol. 2020 Feb;47(2):234-240 DS RISalud RD Apr 18, 2025