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Persistent effusions of the middle ear. Cultures for anaerobic bacteria
Abstract:
Recent reports of isolation of bacteria from effusions of the middle ear taken from asymptomatic children have suggested a possible role for persistent bacterial infection in the etiology of prolonged effusions. To investigate the significance of anaerobic bacteria in such effusions, we obtained 51 samples of middle ear effusion (MEE) from 30 children. After careful cleansing of the tympanic membrane with 70% alcohol, we performed tympanocentesis prior to performing a myringotomy. Fastidious bacteriologic methods failed to yield a single anaerobic isolate from any of these specimens. We conclude that anaerobic infection of MEE is exceedingly uncommon.
Insights
Anaerobic bacteria are rarely found in middle ear effusions (MEE) of children, even those with prolonged fluid buildup. This study found no anaerobic isolates in 51 MEE samples, suggesting anaerobic infection is uncommon in pediatric otitis media.
Area of Science:
- Otolaryngology
- Microbiology
- Pediatrics
Background:
- Persistent middle ear effusions (MEE) in children may be linked to bacterial infections.
- The role of anaerobic bacteria in MEE etiology requires further investigation.
Purpose of the Study:
- To determine the prevalence and significance of anaerobic bacteria in middle ear effusions from children.
Main Methods:
- Collected 51 middle ear effusion samples from 30 children undergoing myringotomy.
- Utilized fastidious bacteriologic methods for anaerobic culture.
- Specimens were obtained after tympanic membrane cleansing and tympanocentesis.
Main Results:
- No anaerobic bacteria were isolated from any of the 51 middle ear effusion specimens.
- The study found no evidence of anaerobic infection in the studied pediatric population.
Conclusions:
- Anaerobic bacterial infection of middle ear effusions is exceedingly uncommon in children.
- Findings suggest that anaerobic bacteria do not play a significant role in the etiology of prolonged MEE in this population.