Abstract

With use of antibiotics, complication rate due to chronic suppurative otitis media (CSOM) has come down. But, irrational use can lead to resistance to antibiotics. Indiscriminate use of antibiotics has lead to variation in antibiogram of organisms causing CSOM. Objective: To study pattern and culture-sensitivity of microbes in patients with CSOM Methods: Hospital based cross sectional study was carried out among 70 cases having CSOM. Detailed history, general examination, ear examination was carried out. Pus swab was collected and sent to Microbiology department for culture and sensitivity. Reports were collected and entered. Results: Among 70 ear swabs, growth was seen in 85.7%. Only bacterial growth was seen in 57% while only fungi were seen in 8.5%. Both bacteria and fungi were seen in 20%. Among 54 bacterial isolates, most common was staphylococcus aureus in 40.7% followed by Pseudomonas aeruginosa in 27.7%. Among 20 fungal isolates Aspergillus was seen in 60% and Candida in 40%. Among 22 staphylococcus aureus, 8 were sensitive to amoxyclav. Among 15 cases due to pseudomonas aeruginosa, 7 were sensitive to ceftazidime. Among six cases due to klebsiella, 50% were sensitive to ceftazidime. Among four cases due to Escherichia coli, 50% were sensitive to azithromycin. Conclusion: Staphylococcus species is the major offending pathogen in CSOM and Amoxyclav followed by Gentamicin were found to be most effective antibiotic. The organisms are increasingly becoming resistant to common antibiotics, therefore swab from the discharging ear for culture and sensitivity to antibiotics is very important to select the appropriate antibiotic to prevent resistance.

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