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Abductor laryngeal dystonia: A series treated with botulinum toxin
Author(s) -
Blitzer Andrew,
Brin Mitchell F.,
Stewart Celia,
Aviv Jonathan E.,
Fahn Stanley
Publication year - 1992
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1288/00005537-199202000-00011
Subject(s) - medicine , dystonia , botulinum toxin , adductor muscles , anesthesia , laryngoplasty , breathy voice , larynx , spasmodic dysphonia , surgery , phonation , anatomy , audiology , psychiatry
Abductor laryngeal dystonia (LD) is characterized by a hoarse voice quality which is broken up by breathy or whispered portions. Botulinum toxin injection (Botox) has been a safe and effective treatment for adductor laryngeal dystonia and is currently accepted medical therapy. As an extension of the established treatment program, in 1989 treatment of abductor LD was initiated. Thirty‐two patients have been treated by sequential percutaneous electromyogram‐guided (EMG) injections of the posterior cricoarytenoid (PCA) muscles. Most patients required treatment of both PCA muscles and improved to an average of 70% of normal voice. Patients who had a preexisting tremor, evidence of dystonia in other muscle groups, vocal tremor, or respiratory dysrhythmia had less improvement. Ten patients also required injection of the cricothyroid muscles and/or type I laryngoplasty.