2007, Number 4
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Otorrinolaringología 2007; 52 (4)
Abductor spasmodic dysphonia treatment with bilateral application of botulinum type A toxine in tiroaritenoideal muscles
Pérez TMC, Cruz HJ
Language: Spanish
References: 19
Page: 141-146
PDF size: 177.45 Kb.
ABSTRACT
Background: The adductor spasmodic dysphonia is caused by a neurological disorder that induces spasms in the vocal chords and it generates the sustained abnormal muscular activity. Its treatment with botulinum toxin has given good results.
Objective: To report the experiences, techniques and results of the treatment of six patients with diagnosis of adductor spasmodic dysphonia, to those who were applied injections of botulinum toxin type A.
Patients and Method: Six patients with adductor spasmodic dysphonia diagnosis received bilateral injections of botulinum toxin in thyroarytenoid muscles. They were examined by stroboscopic analyses before and after the treatment.
Results: Treatment with botulinum toxin type A resulted in significant improvement in voice function. Most of the patients (66.6%) were women. Their mean age was 51 years. Response to the injection lasted from 1 to 5 days, length of effect was from 3 to 12 weeks. There were no airway or infectious complications from percutaneous technique. There were no cases of postinjection aspiration. Mayor adverse reaction included swallowing problems.
Conclusions: Botulinum toxin is still a treatment alternative to spasmodic dysphonia, due to it tested results with less side effects. Its disadvantages are short-term effect and relatively high cost.
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