Antibiotic susceptibilities of bacteria isolated from chronic suppurative otitis media

Year 2016, Volume: 1 Issue: 2, 41 - 44, 30.09.2016

Arif Hikmet Çatakoglu

Abstract

Background: To
identify the bacteria that cause chronic suppurative otitis media and determine
their antibiotic susceptibilities.

Material and
Methods: We examined bacterial cultures
that were isolated from the ear discharge of 180 patients who were admitted to
the otolaryngology clinic between September 2014 and October 2015 due to
suppurative bluish-green discharge from the middle ear. We also assessed the
antibiotic susceptibilities of these microorganisms by retrospectively using
the results of particular tests. The identification and antibiograms of
bacteria were carried out using the VITEK 2 automated system.

Results: Microbial growth was detected in 162 of 180 samples (90%).
The most frequently isolated strains were P.
aeruginosa in 58 samples (35.8%) and S.
aureus in 34 samples (20.9%). P.
aeruginosa strains showed the highest sensitivity to amikacin (3.4%) and
gentamicin (3.4%), but showed the greatest resistance to cefuroxime (82.7%) and
trimethoprim/sulfamethoxazole (89.6%). S.
aureus showed the lowest resistance to vancomycin (%0) and highest
resistance to penicillin (88.2%) respectively.

Conclusion: We
detected low resistance to aminoglycosides and quinolones, which are frequently
used in the treatment of chronic suppurative otitis media. The detection of
microorganisms, and a prior knowledge of their antibiotic susceptibilities,
will contribute to successfully treating this disease.

Keywords

Otitis media, Pseudomonas aeruginosa, Staphylococcus aureus

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