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Unique microbiology of chronically unstable canal wall down tympanomastoid cavities: considerations for surgical revision

Published online by Cambridge University Press:  03 April 2013

M B Gluth ,
B Y B Tan ,
P L Santa Maria  and
M D Atlas
M B Gluth*
Affiliation:
Department of Otolaryngology - Head and Neck Surgery, University of Arkansas for Medical Sciences, Little Rock, USA Ear Science Institute Australia and Ear Sciences Centre, University of Western Australia, Perth, Australia
B Y B Tan
Affiliation:
Department of Otolaryngology, Singapore General Hospital, Singapore Ear Science Institute Australia and Ear Sciences Centre, University of Western Australia, Perth, Australia
P L Santa Maria
Affiliation:
Ear Science Institute Australia and Ear Sciences Centre, University of Western Australia, Perth, Australia
M D Atlas
Affiliation:
Ear Science Institute Australia and Ear Sciences Centre, University of Western Australia, Perth, Australia
*
Address for correspondence: Dr M B Gluth, Department of Otolaryngology – Head and Neck Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham St., 543, Little Rock, Arkansas 72205, USA Fax: +1 501 686 8029 E-mail: [email protected]
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Abstract

Objective:

To review the microbiology of open tympanomastoid cavities in patients who underwent revision surgery due to chronic instability.

Methods:

This paper describes a retrospective chart review of surgical revision cases of chronically unstable open mastoid cavities. Patient records from 2000 to 2010 were reviewed for the type of organism cultured, antimicrobial resistance and the presence of cholesteatoma.

Results:

In total, 121 revision surgical procedures were performed on 101 patients. Seventy-nine procedures involved culture specimen processing, 37 of which were positive. The most commonly cultured organism was Staphylococcus aureus, which was more than twice as common as any other pathogen. The presence of cholesteatoma had no impact on the likelihood of a positive culture or polymicrobial culture. Antimicrobial-resistant pathogens were uncommon.

Conclusion:

A positive culture was not an overwhelmingly common characteristic of unstable tympanomastoid cavities. Furthermore, antimicrobial resistance did not appear to play an essential role in leading patients towards revision open mastoid surgery.

Keywords

MastoidectomyCholesteatomaOtitis Media
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 127 , Issue 5 , May 2013 , pp. 458 - 462
Copyright
Copyright © JLO (1984) Limited 2013 

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Footnotes

Presented orally at the Australian Society of Otolaryngology – Head and Neck Surgery annual scientific meeting, 31 March – 4 April 2012, Adelaide, Australia.

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