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1 results

  • Sacculo-collic response in otosclerosis and following successful stapes surgery

  • E Stapleton, R Mills, J C Tham
  • Journal:
    The Journal of Laryngology & Otology / Volume 122 / Issue 4 / April 2008
    Published online by Cambridge University Press:
    12 March 2007, pp. 347-350
    Print publication:
    April 2008
  • 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.