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Sacculo-collic response in otosclerosis and following successful stapes surgery

Published online by Cambridge University Press:  12 March 2007

E Stapleton ,
R Mills  and
J C Tham
E Stapleton*
Affiliation:
Otolaryngology Unit, University of Edinburgh, Scotland, UK
R Mills
Affiliation:
Otolaryngology Unit, University of Edinburgh, Scotland, UK
J C Tham
Affiliation:
Otolaryngology Unit, University of Edinburgh, Scotland, UK
*
Address for correspondence: Ms Emma Stapleton, Department of Otolaryngology, Lauriston Building, Edinburgh EH3 9HA, Scotland, UK. E-mail: emmastapleton@doctors.org.uk
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Abstract

Introduction:

The sacculo-collic reflex is believed to be a short latency, otolith-mediated myogenic response to sound. With the application of air-conducted sound, one would expect an absent response in stapes fixation, as a fixed stapes footplate will not transmit a pressure wave to the saccule.

Methods:

Fifty patients (70 stapes surgery ears, 26 otosclerotic ears and four normal ears) and 40 controls underwent repeated sacculo-collic tests.

Results:

The results support the proposed mechanism for the sacculo-collic response. The study also suggests that, whilst stapedotomy piston prostheses are effective in the reversal of conductive hearing loss, they produce an insufficient pressure wave to elicit a myogenic response to sound.

Conclusion:

The sacculo-collic test could be a useful tool for screening otolith function and inferior vestibular nerve integrity, but further work is needed to determine the effect of stapes surgery on saccular function.

Keywords

Otolithic MembraneSaccule And UtricleEvoked PotentialsOtosclerosisStapes Surgery
Type
Main Article
Information
The Journal of Laryngology & Otology , Volume 122 , Issue 4 , April 2008 , pp. 347 - 350
Copyright
Copyright © JLO (1984) Limited 2007

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