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KMID : 0858620070110010049
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Korean Journal of Audiology
2007 Volume.11 No. 1 p.49 ~ p.54
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A Bacteriologic Study of Otorrhea at Outpatient Clinic
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Park Min-Hyun
Lee Jee-eun
Kim Young-Ho
Jin Hong-Ryul
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Abstract
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Background and Objectives : Identification of the causative pathogens is very important for proper management of acute or chronic otitis media. The aim of this study is to analyze the cultured organisms from the ear discharge and the susceptibility to the antibiotics.
Materials and Methods : A retrospective study was performed on the bacteriologic results of 105 out-patients of acute or chronic otitis media with otorrhea who visited the department of otolaryngology at the Seoul National University Boramae hospital from Jan 2006 to Dec 2006. Otorrhea swap was sent to microbiology laboratory for culture and susceptibility test at first visit.
Results: The causes of otorrhea were chronic otitis media (86 ears, 81.9%), acute otitis media (10 ears, 9.5%), tympanostomy tube infection, postoperative wound infection and traumatic tympanic perforation. Total 116 bacterial strains were isolated from 96 ears, including 28 Gram-negative rods (28.3%), 59 Gram-positive cocci (59.6%), and 12 Gram-positive rods (12.1%). Among the Gram-negative rod, Pseudomonas was detected in 21 ears of subjects (67.9%), others were Proteus and Providencia. Staphylococcus aureus (46 ears, 69.8%) was the majority of the Gram positive cocci, including 24 ears with MRSA. Among 21 ears with Pseudomonas, ciprofloxacin resistant Pseudomonas was detected in 14 ears.
Conclusion: The prevalence of MRSA was found to be 49% of isolated Staphylococcus aureus. Bacterial resistence of isolated Pseudomonas was found to be 66% with ciprofloxacin and 40% with penicillin. Appropriate antibiotics should be selected against the etiologic pathogen considering the emergence of antibioic-resistant bacteria.
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KEYWORD
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Bacteriology, Drug-Resistance, Bacterial, Susceptibility
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