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Identification of pathogens isolated in acute external otitis cases and evaluation of aminoglycoside and quinolone
1Department of ENT, School of Medicine, Alanya Alaadin Keykubat University, Alanya, Turkey.
Objective:
This study aimed to identify pathogens isolated in acute external otitis cases and determine their distribution according to ages and seasons as well as investigate the susceptibility or resistance to the aminoglycoside and quinolone group antibiotics of which topical forms are available.
Method:
A total of 168 patients diagnosed with acute external otitis were evaluated retrospectively. Growing bacteria were identified according to the species by conventional methods. Antibiotic susceptibility status was determined for the growing bacteria.
Results:
The most common bacteria detected were pseudomonas group bacteria (38.7 per cent). Resistance to the amikacin group of antibiotics was found to be the lowest and resistance to the ciprofloxacin group of antibiotics was the highest.
Conclusion:
External auditory canal cultures should be taken simultaneously with empirical treatment. Seasonal effect and age group should be taken into consideration in the choice of treatment and after questioning about chronic exposure to water. Empirical treatment should then be started.
Insights
Pseudomonas bacteria are common in acute external otitis. Amikacin antibiotics show low resistance, while ciprofloxacin antibiotics show high resistance, guiding effective treatment choices.
Area of Science:
- Otolaryngology
- Infectious Diseases
- Microbiology
Background:
- Acute external otitis is a common infection.
- Identifying causative pathogens and their antibiotic susceptibility is crucial for effective treatment.
Purpose of the Study:
- Identify pathogens in acute external otitis.
- Determine pathogen distribution by age and season.
- Assess antibiotic susceptibility to aminoglycoside and quinolone antibiotics.
Main Methods:
- Retrospective analysis of 168 patients with acute external otitis.
- Bacterial identification using conventional methods.
- Antibiotic susceptibility testing.
Main Results:
- Pseudomonas species were the most frequently isolated bacteria (38.7%).
- Lowest resistance was observed with amikacin group antibiotics.
- Highest resistance was observed with ciprofloxacin group antibiotics.
Conclusions:
- Bacterial cultures are recommended alongside empirical treatment for acute external otitis.
- Treatment decisions should consider seasonal variations, age groups, and water exposure history.
- Tailoring empirical treatment based on susceptibility patterns improves outcomes.
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