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Acta bioquím. clín. latinoam ; 41(3): 379-383, jul.-sep. 2007. tab
Article in Spanish | LILACS | ID: lil-633021

ABSTRACT

Se evaluaron retrospectivamente las características clínicas de 59 pacientes con aislamientos extraintestinales de Salmonella enterica no Typhi y la resistencia antibiótica entre 1988 y 2004. En el 95% de los casos se conocieron las condiciones de base del huésped que consistieron en: enfermedad oncohematológica (15), lupus eritematoso sistémico (11), síndrome de inmuno deficiencia adquirida (10), pacientes internados en neonatología (8), colecistitis (4) y otras (7). Las formas clínicas halladas fueron: bacteriemias primarias (26), bacteriemias secundarias a gastroenteritis (15), artritis séptica (7), infección urinaria (12), infección intraabdominal (5), meningitis (1) y pericarditis (1). En 29 pacientes se aisló Salmonella enterica no Typhi en más de una localización. El 15,8% y el 21,0% de 59 aislamientos presentaron resistencia a cefalosporinas de 3ª generación y a ampicilina, respectivamente. Salmonella Agona causó un brote epidémico en la sala de cuidados intensivos de neonatología, aislándose de sangre en 5 pacientes y en uno también de LCR. Este serotipo fue multirresistente. Imipenem, trimetroprima-sulfometoxazol y ciprofloxacina fueron los antibióticos más activos (CIM 50: 0,5; 0,5 y 0,002 µg/mL, respectivamente).


The clinical and antimicrobial resistance of 59 patients with extraintestinal infection by nontyphi Salmonella was retrospectively evaluated from 1988 to 2004. In 95% of the patients there were underlying diseases, which included: oncohematologic disease (15), systemic lupus erythematosus (11), acquired immunodeficiency disease (AIDS) (10), patients of neonatal units (8), colecistitis (4), and other disorders (7). The clinical manifestation were primary bacteremias (26), bacteremias secondary to gastroenteritis (15), arthritis (7), urinary tract infections (12), abdominal infections (5), meningitis (1) and pericarditis (1). In 29 patients Salmonella enterica no Typhi was isolated in more than one site. Resistance to third generation cephalosporins was observed in 15,8 % of these isolates, and resistance to ampicillin in 21,0%. Salmonella Agona was isolated from an outbreak in neonatal ICU; the organism was recovered from blood samples of five neonates and in one patient also isolated from CSF. These isolates showed multiresistance. Imipenem, trimetoprim-sulfametoxazol and ciprofloxacin were the three most active antimicrobial agents (MIC 50: 0.5, 0.5 and 0.002 µg/mL, respectively).


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Salmonella Infections/epidemiology , beta-Lactam Resistance , Salmonella Infections/complications , Salmonella Infections/microbiology , Salmonella Infections/urine , Salmonella Infections/blood , beta-Lactamases , Drug Resistance, Microbial , Salmonella enterica
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