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Year: 2002  Vol. 6   Num. 2  - Apr/June Print:
Original Article
Texto Text in Portuguese
Partial Thyroarytenoid Muscle Miectomy as a Treatment for Adductor Spasmodic Dysphonia
Miectomia Parcial do Msculo Tireoaritenideo como Tratamento para Disfonia Espasmdica de Aduo
Domingos Hiroshi Tsuji*, Luiz Ubirajara Sennes**, Rui Imamura***, Silvia M.R. Pinho****, Natasha Braga*****.
Key words:
larynx, dystonic disorders, voice disorders, laser surgery, muscle denervation, spasmodic dysphonia

Introduction: The injection of the botulinum toxin is widely accepted and it can be considered the most popular method for the treatment of adductor spasmodic dysphonia. However, its transient effect is quite inconvenient, demanding multiple procedures (every 3 to 6 months) and thus avoiding compliance of the patients to this type of treatment. Due to this disadvantage, several surgical procedures have been proposed, such as the partial miectomy of the thyroarythenoid muscle using CO2 laser, which has been used as an alternative method for some selected patients in our institution. Objective: This study demonstrates the preliminary results observed in 6 patients who underwent that surgery. Methods: Laryngovideostroboscopic examination, perceptual voice assessment, and patient's subjective complaints were evaluated before and after the surgical procedure. Results: Although considerable improvement has been achieved with this technique in the early weeks after the surgery, little improvement was observed after 8 to 12 weeks. Only one patient maintained an excellent result, even after 12 months. No complications such as worsening of voice quality, mucosal rigidity and vocal fold bowing were observed. Conclusion: The partial miectomy of the thyroarythenoid muscle using CO2 laser showed a low satisfactory results in a long term follow-up in this group.



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