Laryngeal electromyography in movement disorders: preliminary data

Kimaid, Paulo André Teixeira; Quagliato, Elizabeth Maria Aparecida Barasnevicius; Crespo, Agrício Nubiato; Wolf, Aline Epiphanio; Viana, Maura Aparecida; Resende, Luiz Antônio de Lima

doi:10.1590/s0004-282x2004000400034

Cited by 12 publications

(15 citation statements)

References 21 publications

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“…Similar values were obtained using computerized quantification of manually detected units26,38. Using the Multi-MUP method, reference values obtained from 40 healthy volunteers with a concentric electrode in the cricothyroid and thyroarytenoid muscles, had mean MUAP durations of 4.5 ms and mean amplitudes of 350 microvolts in the thyroarytenoid and 280 in the cricothyroid27.…”

Section: Definitionssupporting

confidence: 77%

Recommendations of the Neurolaryngology Study Group on laryngeal electromyography

Blitzer

Crumley

Dailey

et al. 2009

Otolaryngol.--head neck surg.

129

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The Neurolaryngology Study Group convened a multidisciplinary panel of experts in neuromuscular physiology, electromyography, physical medicine and rehabilitation, neurology, and laryngology to meet with interested members from the American Academy of Otolaryngology Head and Neck Surgery, the Neurolaryngology Subcommittee and the Neurolaryngology Study Group to address the use of laryngeal electromyography (LEMG) for electrodiagnosis of laryngeal disorders. The panel addressed the use of LEMG for: 1) diagnosis of vocal fold paresis, 2) best practice application of equipment and techniques for LEMG, 3) estimation of time of injury and prediction of recovery of neural injuries, 4) diagnosis of neuromuscular diseases of the laryngeal muscles, and, 5) differentiation between central nervous system and behaviorally based laryngeal disorders. The panel also addressed establishing standardized techniques and methods for future assessment of LEMG sensitivity, specificity and reliability for identification, assessment and prognosis of neurolaryngeal disorders. Previously an evidence-based review of the clinical utility of LEMG published in 2004 only found evidence supported that LEMG was possibly useful for guiding injections of botulinum toxin into the laryngeal muscles. An updated traditional/narrative literature review and expert opinions were used to direct discussion and format conclusions. In current clinical practice, LEMG is a qualitative and not a quantitative examination. Specific recommendations were made to standardize electrode types, muscles to be sampled, sampling techniques, and reporting requirements. Prospective studies are needed to determine the clinical utility of LEMG. Use of the standardized methods and reporting will support future studies correlating electro-diagnostic findings with voice and upper airway function.

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Section: Definitionssupporting

confidence: 77%

Recommendations of the Neurolaryngology Study Group on laryngeal electromyography

Blitzer

Crumley

Dailey

et al. 2009

Otolaryngol.--head neck surg.

129

View full text Add to dashboard Cite

show abstract

“…LT involves both intrinsic and extrinsic laryngeal muscles and may spread to the surrounding musculature. In addition, LEMG is a useful tool for distinguishing the two diseases [17] . In the end, the distinction is difficult, particularly for patients with LT who compensate with significantly increased laryngeal muscle tension, and may result in a falsely elevated co-occurrence in our study.…”

Section: Discussionmentioning

confidence: 99%

Laryngeal Tremor: Co-Occurrence with Other Movement Disorders

Wolraich¹,

Marchis-Crisan

Redding³

et al. 2010

ORL

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Introduction: Limited epidemiologic information exists regarding the co-occurrence of laryngeal tremor (LT) and tremor in other parts of the body, and of other movement disorders. Tremor is the involuntary skeletal muscle contraction that leads to oscillatory movement. It can affect many parts of the body including the chin, neck, laryngeal muscles, or limbs. When it is not associated with parkinsonism, it is called an essential tremor. We reviewed our 5-year experience with LT patients and the presence of other movement disorders. Methods: We performed a retrospective review of 29 patients with LT seen in a voice clinic over a 5-year period from January 2004 to April 2009. Results: Of the 29 patients, 27 (93%) had co-incidence of another movement disorder. Of these patients, 45% had spasmodic dysphonia, 41% had oropharyngeal tremors, 38% had essential limb tremor, 31% had orofacial dystonias, and 24% had essential head and neck tremor. Only 1 patient (3%) presented with Parkinson’s disease. Conclusion: Otolaryngologists may be the first to evaluate a patient for tremors. It is important to consider other movement disorders when examining these patients as neurologic assessment and treatment of other tremors may be beneficial.

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“…Segundo Shouchard (1987), na postura ereta, os pés devem estar à frente dos tornozelos, conseqüentemente a linha da gravidade que cai no meio deles é encontrada à frente desta articulação, provocando um desequilíbrio anterior. Para corrigi-lo, obedecendo a lei do mínimo esforço, o joelho situa-se ligeiramente atrás da linha da gravidade, o ventre à frente, as costas atrás e a cabeça à frente.…”

Section: Kendal E MC Crearyunclassified

“…Souchard (1987) afirmou: cada vez que um músculo se encurta, ele mantém suas extremidades próximas e conseqüentemente os ossos que estão inseridos a ele também, desorganizando outros com origem ou inserção nestes ossos, e assim sucessivamente.…”

Laryngeal electromyography in movement disorders: preliminary data

Cited by 12 publications

References 21 publications

Recommendations of the Neurolaryngology Study Group on laryngeal electromyography

Recommendations of the Neurolaryngology Study Group on laryngeal electromyography

Laryngeal Tremor: Co-Occurrence with Other Movement Disorders

Estudo da postura corporal em portadores de disfonia

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