Adriana Pardo-Maza1, Isabel García-Lopez2, Susana Santiago-Pérez3, Javier Gavilán2. 1. Department of Otolaryngology, Voice Pathology Unit, La Paz University Hospital, IdiPaz Research Institute, Madrid, Spain. Electronic address: pardoadriana833@gmail.com. 2. Department of Otolaryngology, Voice Pathology Unit, La Paz University Hospital, IdiPaz Research Institute, Madrid, Spain. 3. Department of Neurophysiology, Voice Pathology Unit, La Paz University Hospital, IdiPaz Research Institute, Madrid, Spain.
Abstract
OBJECTIVE: This study aimed to determine the value of laryngeal electromyography in the prognosis of vocal fold paralysis. STUDY DESIGN: This is a retrospective descriptive study. MATERIALS AND METHODS: This study included 80 patients diagnosed with unilateral or bilateral vocal fold paralysis on flexible laryngoscopy between 2002 and 2014 in a tertiary medical center. Laryngeal electromyography using a standardized protocol was performed; the outcome measures were classified and analyzed into two groups according to the degree of injury. Group 1 included patients with mild to moderate injury, and group 2 included patients with severe to complete injury. Prognosis was correlated with vocal fold motion recovery status with a minimum of 6 months of follow-up since the symptoms onset using positive and negative predictive values. RESULTS: Sixty patients showed acute or chronic recurrent laryngeal neuropathy in laryngeal electromyography. Twelve of 41 patients included in group 1 recovered motion, and 30 of 35 patients included in group 2 did not recover, resulting in 88.2% of positive predictive value and 35.7% of negative predictive value. CONCLUSIONS: Our data confirm that laryngeal electromyography is a useful clinical tool in predicting poor recovery in patients with vocal fold paralysis. It allows identification of candidates for early intervention.
OBJECTIVE: This study aimed to determine the value of laryngeal electromyography in the prognosis of vocal fold paralysis. STUDY DESIGN: This is a retrospective descriptive study. MATERIALS AND METHODS: This study included 80 patients diagnosed with unilateral or bilateral vocal fold paralysis on flexible laryngoscopy between 2002 and 2014 in a tertiary medical center. Laryngeal electromyography using a standardized protocol was performed; the outcome measures were classified and analyzed into two groups according to the degree of injury. Group 1 included patients with mild to moderate injury, and group 2 included patients with severe to complete injury. Prognosis was correlated with vocal fold motion recovery status with a minimum of 6 months of follow-up since the symptoms onset using positive and negative predictive values. RESULTS: Sixty patients showed acute or chronic recurrent laryngeal neuropathy in laryngeal electromyography. Twelve of 41 patients included in group 1 recovered motion, and 30 of 35 patients included in group 2 did not recover, resulting in 88.2% of positive predictive value and 35.7% of negative predictive value. CONCLUSIONS: Our data confirm that laryngeal electromyography is a useful clinical tool in predicting poor recovery in patients with vocal fold paralysis. It allows identification of candidates for early intervention.
Authors: F Granato; F Martelli; L V Comini; P Luparello; S Coscarelli; O Le Seac; S Carucci; P Graziani; R Santoro; G Alderotti; M R Barillari; Giuditta Mannelli Journal: Eur Arch Otorhinolaryngol Date: 2019-08-02 Impact factor: 2.503