Abnormal Laryngeal Electromyography Findings in Asymptomatic Adults Across the Age Spectrum

2020 ◽  
Author(s):  
Andrée‐Anne Leclerc ◽  
Michael C. Munin ◽  
Libby J. Smith ◽  
Clark A. Rosen
Keyword(s):  
Laryngeal Electromyography

Relationship Between Laryngeal Electromyography and Video Laryngostroboscopy in Vocal Fold Paralysis

2017 ◽  
Vol 31 (5) ◽  
pp. 638-642 ◽  
Author(s):  
Joel A. Maamary ◽  
Ian Cole ◽  
Paul Darveniza ◽  
Cecilia Pemberton ◽  
Helen Mary Brake ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Vocal Fold Paralysis ◽  
Laryngeal Electromyography

Vocal Fold Paralysis Following Radiotherapy for Nasopharyngeal Carcinoma: Laryngeal Electromyography Findings

2003 ◽  
Vol 17 (1) ◽  
pp. 82-87 ◽  
Author(s):  
David P.C Lau ◽  
Yew-Long Lo ◽  
Joseph Wee ◽  
Nam-Guan Tan ◽  
Wong-Kein Low
Keyword(s):  
Nasopharyngeal Carcinoma ◽  
Vocal Fold ◽  
Vocal Fold Paralysis ◽  
Laryngeal Electromyography

DOZ047.98: The role of laryngeal electromyography in differential diagnosis of vocal cord immobility: a case report

2019 ◽  
Vol 32 (Supplement_1) ◽  
Author(s):  
A Salvati ◽  
M Trozzi ◽  
D Meucci ◽  
M L Tropiano ◽  
S Bottero
Keyword(s):  
Differential Diagnosis ◽  
Respiratory Distress ◽  
Ct Scan ◽  
Vocal Cord ◽  
Pulmonary Function Tests ◽  
Brain Mri ◽  
Laryngeal Electromyography ◽  
Sleep Study ◽  
Neurological Evaluation

Abstract Object The term ‘vocal cord immobility’ (VCI) encompasses both vocal cord paralysis and crico-arytenoid joint ankylosis (CAJA). Bilateral VCI represents an emergency condition characterized by stridor and respiratory distress sometimes requiring tracheostomy to ensure an adequate and safe airway. The aim of this study is to describe the diagnostic and therapeutic management of a rare case of congenital bilateral CAJA in a patient without pregnancy complications, perinatal traumas, or other comorbidities. Materials and Methods The patient was born full term by C-section after a healthy pregnancy (BW 3270 g, APGAR 9 at 5'). After birth she presented severe stridor with respiratory distress. She was admitted to our hospital when she was 3 months old. The diagnostic assessment was performed with airway endoscopy, pulmonary function tests (PFT), sleep study, echocardiogram, neurological evaluation, chest computed tomography (CT) scan, and brain magnetic resonance imaging (MRI). Laryngeal electromyography (LEMG) with endoscopic placement of Hookwire electrodes was carried out for the differential diagnosis between paralysis and ankylosis and the subsequent choice of the treatment. PFT and sleep study were repeated after each endoscopic procedure. Results The first airway endoscopy showed bilateral VCI in paramedian position and palpatory evidence of bilateral crico-arytenoid joint fixation. PFT highlighted inspiratory obstruction at the flow/volume and flow/time curves and tidal volume reduction. Sleep study was indicative of mild–moderate obstructive apnea. Echocardiogram, neurological evaluation, brain MRI, and chest CT scan did not detect anomalies. LEMG showed continuous low-amplitude basal activity in all analyzed muscles, in the absence of spontaneous neurotonic activations. Motor evoked potentials (MEP) denoted normal left response and minimum right delay. Two glottic dilations were performed with 7 and 8 mm balloons determining the decrease of stridor and good respiratory balance confirmed by PFT. Endoscopy showed a slight recovery of laryngeal motility. Conclusion The management of this rare clinical case points out the crucial role of a careful and complete endoscopic examination including the palpation of the crico-arytenoid joints. Moreover LEMG represents an important instrument for the correct differential diagnosis in VCI. In the future the use of LEMG could be mandatory in pediatric patients in order to avoid tracheotomy in favor of more conservative procedures.

Laryngeal Electromyography-Guided Hyaluronic Acid Vocal Fold Injections for Glottic Insufficiency

2020 ◽  
Vol 129 (11) ◽  
pp. 1063-1070
Author(s):  
Alice Q. Liu ◽  
Joel Singer ◽  
Terry Lee ◽  
Amanda Hu
Keyword(s):  
Hyaluronic Acid ◽  
Fundamental Frequency ◽  
Vocal Fold ◽  
The Novel ◽  
Completion Rates ◽  
Laryngeal Electromyography ◽  
Glottic Insufficiency ◽  
Maximum Phonation Time ◽  
Novel Technique ◽  
Glottal Insufficiency

Objectives: To assess voice outcomes using the novel technique of in-office laryngeal electromyography-guided vocal fold injections (LEVFI) with hyaluronic acid to treat glottal insufficiency. Secondary objectives included determining the complication/completion rates and if any factors were associated with improved voice outcomes. Methods: Retrospective review of patients who received their first LEVFI from August 2017 to December 2018. Three- and six-month voice outcomes were assessed. Outcomes included voice handicap index-10 (VHI-10), maximum phonation time (MPT), perceptual analysis of voice (GRBAS), fundamental frequency, and stroboscopy. Results: Of the 121 eligible patients (55.4% male, age 63.7 years), 94 (77.7%) had complete 3-month data and 59 (48.8%) had complete 6-month data. VHI-10 was significantly improved from 25.7 ± 7.5 to 20.9 ± 10.9 at 3 months ( P < .001) and to 19.1 ± 11.5 at 6 months ( P < .001). MPT improved from 6.2 ± 5.4 seconds to 9.4 ± 7.1 seconds at 3 months ( P < .001) and to 11.3 ± 8.2 seconds at 6 months ( P < .001). GRBAS was improved in 74.8% of patients ([65.2, 82.8] 95% CI) at 3 months and 80.8% ([69.9, 89.1]) 95% CI) at 6 months. Stroboscopy showed a glottic gap improvement in 74.8% of patients ([65.8, 82.4] 95% CI) at 3 months and in 80.3% ([65.9, 88.5] 95% CI) at 6 months. Fundamental frequency was unchanged, as expected. Multivariate analysis reported that no factors were associated with better voice outcomes. Overall, 177/181 (97.8%) injections were completed. There were no complications. Conclusion: In-office LEVFI is an effective, novel technique to treat glottic insufficiency with improved voice outcomes, high completion rate, and no significant complications.

Practice Parameter: Laryngeal Electromyography (An Evidence-Based Review)

2004 ◽  
Vol 130 (6) ◽  
pp. 770-779 ◽  
Author(s):  
Robert T. Sataloff ◽  
Steven Mandel ◽  
Eric A. Mann ◽  
Christy L. Ludlow
Keyword(s):  
Evidence Based ◽  
Practice Parameter ◽  
Laryngeal Electromyography
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