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The Welch Allyn Audioscope and Microtymp: their accuracy and that of pneumatic otoscopy, tympanometry and pure tone audiometry as predictors of otitis media with effusion

Published online by Cambridge University Press:  29 June 2007

R. Vaughan-Jones  and
R. P. Mills
R. Vaughan-Jones*
Affiliation:
Dundee
R. P. Mills
Affiliation:
Dundee
*
R. Vaughan-Jones, Department of Otolaryngology, Ninewells Hospital, Dundee DD1 9SY.
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Abstract

Results of standard audiometry and tympanometry were compared with the Welch Allyn ‘Audioscope’ and ‘Microtymp’, in the diagnosis of secretory otitis media, in 100 children.

Standard pure tone audiometry had a specificity of 92 per cent and sensitivity of 51.6 per cent. The Welch Allyn ‘Audioscope’ a specificity of 84.2 per cent and sensitivity of 57.5 per cent; standard tympanometry a specificity of 71 per cent and sensitivity of 88 per cent; the Welch Allyn ‘Microtymp’ a specificity of 63 per cent and sensitivity of 90 per cent.

In view of cost, portability, and speed of testing the Welch Allyn instruments would be particularly suitable for community screening.

Pure tone audiometry with a pass threshold of 25 dB, at 2 and 4 kHz is a poor indicator of effusion.

Keywords

Otitis media with effusionAudiometryhearing testsacoustic impedance tests
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 106 , Issue 7 , July 1992 , pp. 600 - 602
Copyright
Copyright © JLO (1984) Limited 1992

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