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Laryngeal electromyography: an evidence-based review
Robert T Sataloff1, Steven Mandel, Eric A Mann
1Laryngeal Task Force, American Association of Electrodiagnostic Medicine
Muscle & Nerve
|November 26, 2003
Summary
Laryngeal electromyography (EMG) may help guide botulinum toxin injections for adductor spasmodic dysphonia. However, evidence does not support its use for abductor spasmodic dysphonia or other laryngeal disorders.
Area of Science:
- Neurology
- Otolaryngology
- Medical Technology
Background:
- Laryngeal electromyography (EMG) is a technique used for diagnosing and treating laryngeal movement disorders.
- A systematic review of literature from 1944-2001 was conducted to evaluate the clinical application of laryngeal EMG.
- Thirty-three studies met inclusion criteria for the review.
Framework:
- Evidence-based review of laryngeal EMG applications.
- Systematic literature search (1944-2001).
- Inclusion criteria applied to 584 identified articles.
Implementation:
- Laryngeal EMG guided botulinum toxin injections into the thyroarytenoid muscle for adductor spasmodic dysphonia showed benefit.
- No significant difference or benefit was found when comparing EMG-guided injections to endoscopic injections for abductor spasmodic dysphonia.
Implications:
- Laryngeal EMG is possibly useful for guiding botulinum toxin injections in adductor spasmodic dysphonia.
- Insufficient evidence exists to support or refute laryngeal EMG for other laryngeal disorders.
- Further evidence-based research is needed for broader applications of laryngeal EMG.