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NEUROLOGY 2004;62:2294-2296
© 2004 American Academy of Neurology
Brief Communications

Head impulse test reveals residual semicircular canal function after vestibular neurectomy

Nadine Lehnen, MPhil, Swee T. Aw, MBBS MBiomedE, PhD, Michael J. Todd, BE MBiomedE and G. Michael Halmagyi, MD FRACP

From the Department of Neurology (Drs. Aw and Halmagyi, N. Lehnen and M.J. Todd), Royal Prince Alfred Hospital, Sydney, Australia; and Department of Neurology (N. Lehnen), Klinikum Grosshadern, Ludwig Maximilian University, Munich, Germany.

Address correspondence and reprint requests to N. Lehnen, Department of Neurology and Center for Sensorimotor Research, Klinikum Grosshadern, Marchioninistr. 23, 81377 Munich, Germany; e-mail: Nadine.Lehnen{at}campus.lmu.de

Meniere disease patients sometimes report vertiginous Meniere attacks after vestibular neurectomy that spares hearing. To determine why, the authors compared postsurgical semicircular canal function in nine patients with preserved hearing with that of a control group with no preservation of hearing. The three-dimensional head impulse test revealed residual posterior canal function in all patients with vertigo attacks (eight). The control patients had no residual canal function. Thus, residual vestibular function on the ipsilesional side may cause vertiginous Meniere attacks.

Received September 29, 2003. Accepted in final form February 10, 2004.




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K. P. Weber, S. T. Aw, M. J. Todd, L. A. McGarvie, I. S. Curthoys, and G. M. Halmagyi
Head impulse test in unilateral vestibular loss: Vestibulo-ocular reflex and catch-up saccades
Neurology, February 5, 2008; 70(6): 454 - 463.
[Abstract] [Full Text] [PDF]


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