Objectives: Brain abscess is one of the most serious diseases of the CNS and is associated with high morbidity and mortality. With regard to the lack of data supporting an optimal therapeutic strategy, this study aimed to explore the prognostic factors of brain abscess, putting emphasis on the impact of therapeutic decisions.
Methods: We retrospectively included patients hospitalized for brain abscess during a period of 13 years. Comorbidities (Charlson scale), clinical presentation, microbiology culture, radiological features and therapeutic management were collected. Glasgow Outcome Scale (GOS) at 3 months and length of hospital stay were, respectively, the main and the secondary outcomes. Logistic regression was used to determine factors associated with outcome independently.
Results: Initial Glasgow Coma Scale (GCS) ≤14 and comorbidities (Charlson scale ≥2) were associated with poor neurological outcome while oral antibiotic switch was associated with better neurological outcome. Oral switch did not appear to be associated with an unfavourable evolution in the subset of patients without initial neurological severity (GCS >14) on admission. Duration of IV regimen and time to oral switch were associated with the length of inpatient stay.
Conclusions: This study confirms the role of GCS and comorbidities as prognostic factors and presents reassuring data regarding the safety of oral switch for the antibiotic treatment of brain abscesses. Oral switch could prevent catheter-induced iatrogenic complications and allow a higher quality of life for patients.
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