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Microorganisms isolated from infected aural fistulas
Abstract:
Aural fistula is a congenital deformity of the external ear relatively common in Orientals and rare in Caucasians. Suppuration tends to occur, and chemotherapy rather than surgical drainage should be attempted. However, the lack of information concerning infected aural fistulas has made appropriate chemotherapy difficult. Microorganisms isolated from 13 cases of infected aural fistulas were studied from January 1981 to December 1982. Six species and 22 strains were isolated; nonsporeforming faculative anaerobes were detected in 12 cases. The isolated pathogens included Peptococcus sp (10 cases), Peptostreptococcus sp (3), Bacteroides sp (3), and Fusobacterium sp (2). One case exhibited only Staphylococcus aureus. Our data also stresses the etiologic importance of anaerobic gram-positive cocci in infected aural fistulas.
Insights
Infected aural fistulas, a congenital ear deformity, are often caused by anaerobic gram-positive cocci. This study highlights the importance of identifying these specific bacteria for effective chemotherapy treatment.
Area of Science:
- Otolaryngology
- Microbiology
- Infectious Diseases
Background:
- Aural fistula is a congenital external ear deformity, more prevalent in Oriental populations.
- Infected aural fistulas present a challenge due to limited data on causative microorganisms, complicating chemotherapy selection.
- Suppuration is common, suggesting chemotherapy as a preferred initial treatment over surgical drainage.
Purpose of the Study:
- To identify microorganisms involved in infected aural fistulas.
- To provide data for guiding appropriate chemotherapy strategies for infected aural fistulas.
Main Methods:
- Microorganisms were isolated from 13 cases of infected aural fistulas between January 1981 and December 1982.
- Species identification and strain characterization were performed on isolated pathogens.
Main Results:
- A total of six species and 22 strains were isolated from the 13 cases.
- Nonsporeforming facultative anaerobes were identified in 12 cases.
- Key pathogens included Peptococcus sp. (10 cases), Peptostreptococcus sp. (3 cases), Bacteroides sp. (3 cases), and Fusobacterium sp. (2 cases). One case involved Staphylococcus aureus exclusively.
Conclusions:
- Anaerobic gram-positive cocci, particularly Peptococcus sp., play a significant etiologic role in infected aural fistulas.
- The findings underscore the importance of considering these anaerobic bacteria in the management of infected aural fistulas.
- This study contributes crucial microbiological data to inform chemotherapy choices for this condition.