title: [Brain abscess in a third-level hospital: epidemiology and prognostic factors related to mortality].
abstract: OBJECTIVE
  To document the epidemiology, causes, treatment and prognostic factors associated with mortality of patients with brain abscess in a tertiary medical center.
  
  
  METHODS
  Observational retrospective cohort study of patients with cerebral abscess admitted at a tertiary hospital during 13 years.
  
  
  RESULTS
  The case records of 71 patients admitted to a tertiary hospital between January 1992 and December 2005 and diagnosed of brain abscess were review. Brain abscess occurred at all ages, more frequently in men than in women. Fever, headache and altered mental status were common presenting symptoms. The most common site of infection was the frontal lobe (28 patients). Seventeen patients had multiple abscesses. Staphylococcal infection was seen most commonly. Computed tomography provided sufficient diagnostic information in all cases. Twenty six patients had early surgical drainage. Thirty four patients were admitted to the intensive care Unit (ICU). The overall mortality was 21% (15 patients), all of that related to the infection. Six patients died in ICU. More than 65 years of age (OR, 1.0; CI 95%, 1.0-1.1), medical treatment without surgery (OR, 8.9; CI 95%, 1.1-73.8), presence of multiple abscesses, (OR, 6.0; CI 95%, 1.0-34.9), immunosuppression (OR, 21.5; CI 95%, 2.9-157.2) and delay in starting antibiotherapy (OR, 1.5 per day of delay; CI 95%, 1.0-2.1) were independent predictors of in-hospital death.
  
  
  CONCLUSIONS
  In spite of improvement in diagnosis and treatment of patients with cerebral abscess, mortality is still high. Factors related to patient underlying diseases and the delay in the start an antibiotic treatment were associated with increased mortality (50% increase of mortality risk per day in the delay of starting antibiotherapy).
authors.affiliation: Unidad de Enfermedades Infecciosas, Hospital Universitario Marqués de Valdecilla, Universidad de Cantabria, Avda Valdecilla, s/n, 39008 Santander, Cantabria, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Gutiérrez-Cuadra
authors.forename: M A
authors.initials: MA
authors.lastname: Ballesteros
authors.forename: A
authors.initials: A
authors.lastname: Vallejo
authors.forename: E
authors.initials: E
authors.lastname: Miñambres
authors.forename: C
authors.initials: C
authors.lastname: Fariñas-Alvarez
authors.forename: J D
authors.initials: JD
authors.lastname: García-Palomo
authors.forename: A
authors.initials: A
authors.lastname: Vázquez Barquero
authors.forename: M C
authors.initials: MC
authors.lastname: Fariñas
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001922:Brain Abscess / Q000453:epidemiology* / Q000401:mortality*; D002648:Child; D002675:Child, Preschool; D005260:Female; D017052:Hospital Mortality; D006760:Hospitalization; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D012307:Risk Factors; D055815:Young Adult