Abstract
Background: CSOM is the most common notorious infection seen in developing countries which has led to a number of serious life threatening complications. The most common organism isolated in CSOM is Pseudomonas aeruginosa. Early and effective treatment based on the causing organism and its antibiotic sensitivity has helped in prevention of complications. The main objective of this study is to identify the prevalence of Pseudomonas aeruginosa in CSOM and to know their sensitivity pattern against the commonly prescribed antibiotics.
Material and Methods: A total of 130 patients with unilateral and bilateral CSOM were enrolled in the study. Samples were processed and organisms were identified by standard bacteriological methods. Antibiotic sensitivity testing was done according to CLSI guidelines. Sensitivity was tested for 11 different antibiotics by dividing into 6 classes.
Results: Of the total 130 samples collected, 40 (30.7%) showed growth of Pseudomonas aeruginosa. Sensitivity pattern of Pseudomonas aeruginosa showed that piperacillin was active against 90% of isolates followed by piperacillin+tazobactum 82.5% and meropenem 70%.
Conclusion: Pseudomonas aeruginosa was the most common bacteria isolated from CSOM followed by Staphylococcus aureus. Penicillin group of drugs were found to be most effective followed by carbapenem group. Pseudomonas aeruginosa showed high resistance to tobramycin. Continuous surveillance is hence necessary to monitor antimicrobial resistance and to guide in empirical treatment.
Keywords: Chronic Suppurative Otitis Media, Pseudomonas aeruginosa Antibiogram.
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Corresponding Author
Dr. S. Soumya
Assistant Professor, Department of Microbiology, Jawaharlal Nehru Medical College,
KAHER University, Belgaum-590010, Karnataka, India
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
DOI: https://dx.doi.org/10.18535/jmscr/v6i2.156
