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Nasal Colonization of Methicillin-Resistant Staphylococcus aureus in Patients with Chronic Suppurative Otitis Media.

 Eun Jung Lee  ;  Jin Ho Kwon  ;  Ah Young Park  ;  Won-Sang Lee  ;  Eun Jin Son 
 Korean Journal of Audiology (대한청각학회지), Vol.16(2) : 75-79, 2012 
Journal Title
 Korean Journal of Audiology (대한청각학회지) 
Issue Date
Culture ; Methicillin-resistant Staphylococcus aureus ; Otitis media
BACKGROUND AND OBJECTIVES: Methicillin-resistant Staphylococcus aureus (MRSA) is one of major pathogens in patients with chronic suppurative otitis media (CSOM). In addition to intrinsic MRSA infection of the mastoid air cell system, nasal colonization of MRSA, a known predictor of postoperative surgical site infection, may pose increased risk of postoperative complications. The purpose of this study is to describe microbiology of preoperative nasal swab screening and localized middle ear specimens in patients undergoing otologic surgeries. SUBJECTS AND METHODS: Forty-nine consecutive patients with CSOM who underwent middle ear surgery were included. Preoperative nasal swabs for MRSA, and preoperative and intraoperative middle ear swabs were collected and compared for pathogens. RESULTS: Preoperative nasal swab screening confirmed MRSA colonization in 3/49 patients (6.1%) and methicillin-resistant coagulase-negative Staphylococcus (MRCNS) in 9/49 patients (18.4%). Correlation with preoperative culture results and nasal swab screening results were compatible in 2/4 patients with positive nasal swab for MRSA and 1/9 patients with positive nasal swab for MRCNS. Postoperative conversion to MRSA was observed in 3 patients. CONCLUSIONS: The rate of nasal MRSA colonization among patients with CSOM was higher than among the general community. Preoperative MRSA colonization was associated with MRSA from middle ear specimens. Further studies are warranted to investigate the possible benefit of preoperative treatment of MRSA colonized patients undergoing middle ear surgeries.
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1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Son, Eun Jin(손은진)
Lee, Won Sang(이원상)
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