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Related Experiment Videos

Practice parameter: laryngeal electromyography (an evidence-based review).

Robert T Sataloff1, Steven Mandel, Eric A Mann

  • 1aiver@uscom.com

Journal of Voice : Official Journal of the Voice Foundation
|June 15, 2004
PubMed
Summary

Laryngeal electromyography (EMG) may aid adductor spasmodic dysphonia treatment by guiding botulinum toxin injections. However, evidence for other laryngeal disorders remains insufficient, highlighting a need for further research.

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Area of Science:

  • Neurology
  • Otolaryngology
  • Medical Diagnostics

Background:

  • Laryngeal electromyography (EMG) is a technique used for diagnosing and treating various laryngeal movement disorders.
  • A systematic review was conducted to evaluate the evidence-based utility of laryngeal EMG in clinical practice.

Purpose of the Study:

  • To assess the evidence supporting the use of laryngeal EMG in the diagnosis, prognosis, and treatment of laryngeal movement disorders.
  • To identify areas where further research is needed to establish the efficacy of laryngeal EMG.

Main Methods:

  • A systematic literature review was performed, analyzing 584 articles published between 1944 and 2001.
  • Inclusion criteria were applied to select 33 relevant studies for evidence-based analysis.

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Main Results:

  • Laryngeal EMG demonstrated benefit in guiding botulinum toxin injections into the thyroarytenoid muscle for adductor spasmodic dysphonia.
  • No significant difference or treatment benefit was found when comparing EMG-guided injections to endoscopic injections for abductor spasmodic dysphonia.

Conclusions:

  • Laryngeal EMG is possibly useful for botulinum toxin injections in adductor spasmodic dysphonia treatment.
  • Insufficient evidence exists to support or refute laryngeal EMG's value in other investigated applications, despite anecdotal support.
  • There is a critical need for evidence-based research on broader applications of laryngeal EMG.