Not paralysis, but dystonia causes stridor in multiple system atrophy

Ilaria Maria Merlo; Antonio Occhini; Claudio Pacchetti; Enrico Alfonsi

Not paralysis, but dystonia causes stridor in multiple system atrophy

Ilaria Maria Merlo, Antonio Occhini, Claudio Pacchetti, Enrico Alfonsi

Research output: Contribution to journal › Article › peer-review

Abstract

Electromyography (EMG) was performed in 10 patients with multiple system atrophy, laryngeal or pharyngeal symptoms, or both. In patients with stridor, EMG during quiet breathing revealed persistent tonic activity in both abductor and adductor vocal cord muscles. In patients with dysphagia, the cricopharyngeal muscle showed persistent EMG activity throughout all phases of swallowing. Botulinum toxin injection into the adductor muscle determined subjective improvement and reduced tonic EMG activity. Therefore, the cause of stridor in multiple system atrophy is dystonia of the vocal cords.

Original language	English
Pages (from-to)	649-652
Number of pages	4
Journal	Neurology
Volume	58
Issue number	4
Publication status	Published - Feb 26 2002

ASJC Scopus subject areas

Neuroscience(all)

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title = "Not paralysis, but dystonia causes stridor in multiple system atrophy",

abstract = "Electromyography (EMG) was performed in 10 patients with multiple system atrophy, laryngeal or pharyngeal symptoms, or both. In patients with stridor, EMG during quiet breathing revealed persistent tonic activity in both abductor and adductor vocal cord muscles. In patients with dysphagia, the cricopharyngeal muscle showed persistent EMG activity throughout all phases of swallowing. Botulinum toxin injection into the adductor muscle determined subjective improvement and reduced tonic EMG activity. Therefore, the cause of stridor in multiple system atrophy is dystonia of the vocal cords.",

author = "Merlo, {Ilaria Maria} and Antonio Occhini and Claudio Pacchetti and Enrico Alfonsi",

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T1 - Not paralysis, but dystonia causes stridor in multiple system atrophy

AU - Merlo, Ilaria Maria

AU - Occhini, Antonio

AU - Pacchetti, Claudio

AU - Alfonsi, Enrico

PY - 2002/2/26

Y1 - 2002/2/26

N2 - Electromyography (EMG) was performed in 10 patients with multiple system atrophy, laryngeal or pharyngeal symptoms, or both. In patients with stridor, EMG during quiet breathing revealed persistent tonic activity in both abductor and adductor vocal cord muscles. In patients with dysphagia, the cricopharyngeal muscle showed persistent EMG activity throughout all phases of swallowing. Botulinum toxin injection into the adductor muscle determined subjective improvement and reduced tonic EMG activity. Therefore, the cause of stridor in multiple system atrophy is dystonia of the vocal cords.

AB - Electromyography (EMG) was performed in 10 patients with multiple system atrophy, laryngeal or pharyngeal symptoms, or both. In patients with stridor, EMG during quiet breathing revealed persistent tonic activity in both abductor and adductor vocal cord muscles. In patients with dysphagia, the cricopharyngeal muscle showed persistent EMG activity throughout all phases of swallowing. Botulinum toxin injection into the adductor muscle determined subjective improvement and reduced tonic EMG activity. Therefore, the cause of stridor in multiple system atrophy is dystonia of the vocal cords.

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JO - Neurology

JF - Neurology

SN - 0028-3878

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