Bacterial brain abscesses: factors influencing mortality and sequelae

Area of Science:

• Neurology
• Radiology
• Infectious Diseases

Background:

• Brain abscess is a serious neurological condition with significant mortality and morbidity.
• The advent of computed tomographic (CT) scanning has revolutionized the diagnosis and management of brain abscess.
• Understanding factors influencing patient outcomes is crucial for optimizing treatment strategies.

Purpose of the Study:

• To analyze factors affecting outcomes in patients diagnosed with brain abscess since the introduction of CT scans.
• To identify predictors of mortality and severe sequelae in brain abscess cases.
• To evaluate the impact of diagnostic and treatment timelines on patient prognosis.

Main Methods:

• Retrospective analysis of 39 brain abscess cases diagnosed with CT scan.
• Evaluation of clinical data, including symptom onset, hospitalization delay, admission status, predisposing factors, and diagnostic/treatment details.
• Correlation of these factors with patient outcomes (mortality, severe sequelae, moderate sequelae, full recovery).

Main Results:

• Overall mortality rate was 13%, with severe sequelae in 22% of survivors.
• Shorter delay between symptom onset and hospitalization was significantly associated with poor outcomes.
• Impaired mental status and neurological deficits at admission strongly predicted poor outcomes, irrespective of early diagnosis and treatment initiation within 24 hours.

Conclusions:

• While CT scans enable early diagnosis and treatment of brain abscess, prognosis is primarily dictated by disease progression rate prior to hospitalization.
• Patient's neurological and mental status upon admission are critical determinants of brain abscess outcomes.
• Predisposing factors, imaging findings, and treatment modalities showed no significant correlation with patient outcomes.