Related Experiment Video
Updated: Sep 26, 2026

Modeling Persistent Pseudomonas aeruginosa Infection in Wounded Zebrafish Larvae
Published on: June 13, 2025
Emergence of ciprofloxacin-resistant pseudomonas in pediatric otitis media
1Department of Otolaryngology, Wonkwang Medical School, Iksan 570-711, Republic of Korea. chul@wonkwang.ac.kr
Insights
Fluoroquinolone resistance in pediatric otorrhea is increasing. Topical ciprofloxacin failed in patients with multidrug-resistant Pseudomonas aeruginosa, necessitating alternative antibiotics like amikacin and imipenem.
Area of Science:
- Otolaryngology
- Infectious Diseases
- Clinical Microbiology
Background:
- Widespread use of fluoroquinolone otic drops has led to increased resistance.
- Fluoroquinolone resistance rates are higher than anticipated, impacting treatment efficacy.
Purpose of the Study:
- To evaluate pediatric patients with recurrent otorrhea unresponsive to topical ciprofloxacin.
- To identify causative pathogens and assess antibiotic susceptibility patterns.
Main Methods:
- Retrospective review of 17 pediatric patients with refractory otorrhea between 2000 and 2001.
- Culture and antibiotic sensitivity testing to determine pathogen resistance profiles.
Main Results:
- All patients exhibited ciprofloxacin-resistant Pseudomonas aeruginosa on culture.
- These resistant strains were multidrug-resistant.
- Imipenem and amikacin showed the highest sensitivity rates.
Conclusions:
- Increasing ciprofloxacin resistance in otitis media is a recent concern.
- Culture and sensitivity testing are crucial for guiding management.
- Continuous surveillance of antibiotic resistance is essential.
Objective:
The widespread use of fluoroquinolone otic drops has resulted in the emergence and subsequent increase of fluoroquinolone resistance, at rates greater than anticipated. To evaluate the patients with recurrent otorrhea that were unresponsive to topical ciprofloxacin.
Methods:
Seventeen pediatric patients who were treated with refractory otorrhea between 2000 and 2001 were reviewed retrospectively.
Results:
All patients had ciprofloxacin-resistant pseudomonas on culture and sensitivity test. Ciprofloxacin-resistant pseudomonas from these patients were multidrug resistant. Imipenem was the most sensitive antibiotic agent, followed by amikacin. Most patients were treated with intramuscular amikacin and two patients were treated with intravenous imipenem.
Conclusion:
In our series, resistance to cirpfloxacin in patients with otitis media is increasing recently. Culture and antibiotic sensitivity test may help guide management. Continuous surveillance is necessary to monitor antibiotic resistance and to guide antibacterial therapy.
Related Concept Videos
Mechanism of Antibiotic Resistance in MRSA
Inhibitors of Bacterial DNA Synthesis
Clinical Significance of Antibiotic Resistance
Development of Antibiotic Resistance
Antibiotic Selection