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Acta Oto-Laryngologica Volume 113, 1993 - Issue sup504
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Original Article

Botulinum Toxin Treatment for Spasmodic Dysphonia

Takeo Kobayashi Department of Otolaryngology, Japan Railway Tokyo General Hospital
,
Seiji Niimi Research Institute of Phoniatrics and Logopedics, University of Tokyo, Tokyo, Japan
,
Masanobu Kumada Research Institute of Phoniatrics and Logopedics, University of Tokyo, Tokyo, Japan
,
Hiroko Kosaki Department of Otolaryngology, Japan Railway Tokyo General Hospital
&
Hajime Hirose Research Institute of Phoniatrics and Logopedics, University of Tokyo, Tokyo, Japan
Pages 155-157 | Published online: 08 Jul 2009
 
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Abstract

Effective treatment of adductor type spasmodic dysphonia with botulinum toxin injection is presented. Patients showed objective and/or subjective improvement in phonation. The beneficial effect lasted for approximately 3 months. An immediate complication is temporary hoarseness or aphonia, mainly due to diffusion of BT into the adjacent muscles. This is avoided by limiting the injection to one vocal fold only and by keeping the dose at less than 5 units. Insertion technique of the needles, such as percutaneous and laryngoscopically controlled techniques, are discussed.

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