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Chulalongkorn Medical Journal

2024

Adductor spasmodic dysphonia

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Comparison Study Of Endoscopic-Guided Versus Electromyography-Guided Botulinum Toxin Injection Treatments In Adductor Spasmodic Dysphonia, Manintorn Praditthum, Premsuda Sombuntham Mar 2024

Comparison Study Of Endoscopic-Guided Versus Electromyography-Guided Botulinum Toxin Injection Treatments In Adductor Spasmodic Dysphonia, Manintorn Praditthum, Premsuda Sombuntham

Chulalongkorn Medical Journal

Background: Electromyography (EMG)-guided botulinum injection is recommended in clinical practice guideline for spasmodic dysphonia. However, other alternative techniques have been practiced in absence of EMG machine. Comparison of techniques is limited in the literatures.

Objective: This pilot study aims to compare the effectiveness of treatment between the EMG-guided technique and the endoscopic-guided technique in adductor spasmodic dysphonia.

Method: Five patients who were diagnosed with Adductor spasmodic dysphonia (AdSD) were enrolled and then randomized into 2 groups. Patient data (before and after treatment) were collected. The outcome measurement included voice analysis, voice handicap index (VHI), duration aspiration, duration of breathiness, mean …