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Quantitative analysis of the bacterial findings in otitis media

Published online by Cambridge University Press:  29 June 2007

Lars-Eric Stenfors  and
Simo Räisänen
Lars-Eric Stenfors*
Affiliation:
Depaments of Otolaryngology, University of Tromsö, Tromsö, Norway and Central Hospital of Keski-Pohjanmaa, Kokkola, Finland
Simo Räisänen
Affiliation:
Clinical Laboratory, Central Hospital of Keski-Pohjanmaa, Kokkola, Finland
*
Lars-Eric Stenfors, MD, Dept. of Otolaryngology, Central Hospital of Keski-Pohjanmaa, SF-67200 Kokkola, Finland
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Abstract

Qualitative and quantitative bacterial analysis of 200 samples of middle ear effusions collected from patients with current otitis media was performed. When middle ear pathogens (S. pneumoniae, H. influenzae and B. catarrhalis) where found during current acute otitis media or otitis media with effusion infection, the quantity of these bacteria was of the magnitude 106–108/ml and 0–5 × 105/ml effusion material, respectively. Mucopurulent effusion material contained 6 × 105–108 bacteria per ml whereas effusion from chronically discharging ears exceeded 109 bacteria per ml. Serous effusions did not harbour middle ear pathogens. The appearance of the effusion material was dependent on the number of bacteria involved. Quantification of bacteria in various middle ear effusions offers opportunities to make the diagnosis of various otitis media infections more accurate and readily comparable.

Type
Research Article
Information
The Journal of Laryngology & Otology , Volume 104 , Issue 10 , October 1990 , pp. 749 - 757
Copyright
Copyright © JLO (1984) Limited 1990

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