Related Experiment Video
Updated: Jun 29, 2026

Conjunctival Commensal Isolation and Identification in Mice
Published on: May 1, 2021
Identification and antimicrobial susceptibility of acute external otitis microorganisms
Unlabelled:
Acute external otitis is a polymicrobial infectious disease.
Aim:
The purpose of this study was to isolate, identify and determine the Antimicrobial susceptibility of organisms causing otitis externa (OE).
Methods:
Twenty-seven swabs were taken from the ears of 27 patients with OE for culture and 22 microorganisms were isolate to evaluate sensitivity. In vitro susceptibility tests were performed by agar diffusion disk and results were interpreted according to Clinical Laboratory Standards.
Results:
10 Ear cultures were positive for S. aureus , 8 for P. aeruginosa, 5 for P. aeruginosa and S. aureus and 4 for fungal organisms (Candida albicans e C. Krusei). Gentamicin and quinolones were active against all bacteria tested and significant resistance to amoxicillin/clavulanate was observed. The tested species of Candida had been sensitive to amphothericin B, nystatin, fluconazole and clotrimazole and resistant to miconazole.
Conclusion:
Acute external otitis is a polymicrobial infection and proper knowledge regarding microorganism etiology and susceptibility will contribute to rational antibiotic usage and treatment success.
Related Concept Videos
Microbiome of the Eye
Rapid Identification of Pathogens
Automated Microbial Diagnostics
Mechanism of Antibiotic Resistance in MRSA
Clinical Significance of Antibiotic Resistance
Antimicrobial Effectiveness
