Brain abscesses caused by anaerobic bacteria.

Area of Science:

• Neurology
• Infectious Diseases
• Microbiology

Background:

• Brain abscesses are serious infections requiring prompt diagnosis and treatment.
• Anaerobic bacteria are increasingly recognized as significant pathogens in brain abscesses.
• Understanding the specific characteristics of anaerobic brain abscesses is crucial for effective management.

Purpose of the Study:

• To review the characteristics of brain abscesses caused by anaerobic bacteria.
• To identify the common causative anaerobic bacteria, treatment strategies, and patient outcomes.
• To analyze the prevalence and etiological factors of anaerobic brain abscesses in a specific health setting.

Main Methods:

• Retrospective analysis of brain abscess cases from 2005 to 2021.
• Identification and characterization of anaerobic pathogens involved in brain abscesses.
• Review of patient demographics, clinical presentation, treatment, and outcomes.

Main Results:

• Out of 300 brain abscesses, 31 (10.3%) were caused by anaerobic pathogens.
• Cutibacterium acnes (41.9%), Parvimonas micra (25.8%), and Prevotella spp. (22.5%) were the most frequently isolated anaerobes.
• Neurosurgery and contiguous infections were common etiologies; all patients achieved good outcomes with surgery and antibiotics.

Conclusions:

• Anaerobes account for 10.3% of brain abscesses, consistent with other reports.
• Cutibacterium acnes is the predominant anaerobic pathogen, especially in neurosurgical cases.
• Effective treatment involving surgery and antimicrobial therapy leads to favorable outcomes in anaerobic brain abscesses.