Pericarditis due to anaerobic bacteria

Area of Science:

• Infectious Diseases
• Microbiology
• Cardiology

Background:

• Pericarditis, inflammation of the pericardium, can be caused by various microorganisms.
• Anaerobic bacteria are an under-recognized cause of pericarditis, with distinct microbiological profiles.
• Understanding the sources and characteristics of anaerobic pericarditis is vital for clinical management.

Purpose of the Study:

• To review the microbiology, diagnosis, and management of pericarditis caused by anaerobic bacteria.
• To identify the predominant anaerobic organisms involved in pericarditis.
• To highlight the importance of antimicrobial susceptibility testing for anaerobic pathogens.

Main Methods:

• Literature review of studies reporting pericarditis due to anaerobic bacteria.
• Analysis of predominant anaerobic species and their sources of infection.
• Comparison of clinical diagnostic features with aerobic/facultative bacterial pericarditis.

Main Results:

• Predominant anaerobes include Bacteroides fragilis group, anaerobic streptococci, Clostridium, Fusobacterium, and Bifidobacterium.
• Infection mechanisms include contiguous spread, endocarditis, hematogenous spread, and direct inoculation.
• No significant differences in clinical diagnostic features were observed compared to aerobic pericarditis.

Conclusions:

• Anaerobic gram-negative bacilli show increasing resistance to common antibiotics.
• Complete identification and antimicrobial susceptibility testing are essential for guiding treatment.
• Effective antibiotic therapy targeting anaerobic organisms is key for managing anaerobic pericarditis.