XXXX Due to Isolated @entity3519 .

@entity1 @entity409 @entity7364 @entity6392 @entity3519
OBJECTIVE: To demonstrate the utility of electromyography (EMG) in the evaluation and management of treatment-resistant @entity7364 . METHOD: We report a case of @entity7364 in which EMG was used to identify and treat isolated cricothyroid (CT) @entity3519 . RESULTS: The @entity1 , a healthy 43-year-old @entity1 , presented with 9  months of progressive hoarseness. Her symptoms were present across vocal tasks but were particularly bothersome while dictating. On presentation, her voice was rated grade 3, roughness 3, breathiness 1, asthenia 0, and strain 3 (G3R3B1A0S3). Videostroboscopy was remarkable for @entity6392 . Voice therapy was not beneficial despite appropriate effort. Microdirect laryngoscopy revealed no evidence of structural pathology. The @entity1 was referred for EMG because of her normal examination and failure to improve with therapy. The CT muscle demonstrated an increased latency of 750  ms in all vocal tasks. One month after CT injection with 3 units of botulinum toxin (BTX), her voice was improved. Perceptual voice evaluation was rated G1R1B0A0S1. Voice Handicap Index improved from 87 to  35. CONCLUSIONS: In the absence of structural pathology, EMG can be a useful adjunct in the diagnosis of @entity7364 that persists despite adequate trials of voice therapy. To our knowledge, this is the only report of @entity3519 due to isolated @entity409 successfully treated with BTX.
