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Clin Exp Otorhinolaryngol. 2011 Sep;4(3):122-5. doi: 10.3342/ceo.2011.4.3.122. Epub 2011 Sep 06.

Nasopharynx as a microbiologic reservoir in chronic suppurative otitis media: preliminary study.

Clinical and experimental otorhinolaryngology

Jiwon Chang, Sung-Ho Lee, June Choi, Gi Jung Im, Hak Hyun Jung

Affiliations

  1. Department of Otolaryngology-Head and Neck Surgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.

PMID: 21949577 PMCID: PMC3173702 DOI: 10.3342/ceo.2011.4.3.122

Abstract

OBJECTIVES: The present study was designed to identify the correlations of bacterial strains of the middle ear and the nasopharynx in chronic suppurative otitis media (CSOM) patients who were scheduled for operations.

METHODS: Sixty-three patients with CSOM were enrolled in the study. Culture specimens were collected from the middle ear and nasopharynx of patients who were admitted for operation. Samples collections were performed 3 times; from the middle ear and nasophaynx at the admission day, from the middle ear during the operation, and from the external auditory canal post-operatively. Bacteria were identified by gram staining and biochemical tests. The correspondence rate of organisms which simultaneously exist in the middle ear and the nasopharynx was measured.

RESULTS: Sixty-eight organisms were isolated from the middle ear and 57 organisms from the nasopharynx among 63 patients. Of 68 bacteria identified in middle ear, 26.52% (18 bacteria) corresponded with those of nasopharynx. MRSA had the high correspondence rate, and of 18 methicillin-resistant Staphylococcus aureus (MRSA) isolated from middle ear, 33.3% (6 bacteria) corresponded with nasophaynx. Meanwhile, 3 organisms of MRSA were detected from the external auditory canal post-operatively, although they were only found in nasopharynx pre-operatively.

CONCLUSION: The current trend of middle ear swab alone for bacterial detection would be insufficient to identify the potent MRSA and impede early antibiotic intervention for the effective middle ear surgery. Therefore, it is necessary to perform nasopharynx cultures together with conventional middle ear culture to control potent risk for infection pre-operatively.

Keywords: Bacteriology; Chronic suppurative otitis media; Nasopharynx

References

  1. J Laryngol Otol. 2005 Oct;119(10):774-8 - PubMed
  2. Laryngoscope. 2001 Nov;111(11 Pt 1):2054-9 - PubMed
  3. N Engl J Med. 1998 Aug 20;339(8):520-32 - PubMed
  4. Arch Otolaryngol. 1965 Oct;82(4):359-64 - PubMed
  5. Scand J Infect Dis. 1971;3(3):217-23 - PubMed
  6. Am J Med. 2006 Nov;119(11):943-51 - PubMed
  7. Pediatr Infect Dis J. 2005 Jul;24(7):617-21 - PubMed
  8. Int J Pediatr Otorhinolaryngol. 2005 Jan;69(1):69-74 - PubMed
  9. Ann Otol Rhinol Laryngol. 1994 Oct;103(10):771-4 - PubMed
  10. Pediatr Infect Dis J. 2006 Nov;25(11):1032-6 - PubMed
  11. Acta Otolaryngol. 2007 Oct;127(10):1062-7 - PubMed
  12. JAMA. 1979 May 18;241(20):2170-3 - PubMed

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