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Related Experiment Videos

A classification scheme for paradoxical vocal cord motion

D A Maschka1, N M Bauman, P B McCray

  • 1Department of Otolaryngology-Head and Neck Surgery, The University of Iowa College of Medicine, Iowa City, U.S.A.

The Laryngoscope
|November 22, 1997
PubMed
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Paradoxical vocal cord motion (PVCM) involves vocal cords inappropriately closing during inhalation, causing breathing difficulty. A new classification based on underlying causes aids diagnosis and tailored treatment for this complex condition.

Area of Science:

  • Otolaryngology
  • Neurology
  • Speech-Language Pathology

Background:

  • Paradoxical vocal cord motion (PVCM) is defined by inappropriate adduction of true vocal cords during inspiration.
  • This condition leads to stridor and breathing difficulties due to vocal cord approximation.
  • Current management is hindered by the absence of a comprehensive classification system for PVCM.

Observation:

  • PVCM presents with mobile vocal cords that adduct abnormally during inhalation.
  • Multiple etiological factors contribute to PVCM.
  • Diagnostic evaluation involves assessing characteristic features and potential underlying causes.

Findings:

  • A proposed classification categorizes PVCM by its etiology, including brainstem compression, upper/lower motor neuron injury, movement disorders, gastroesophageal reflux, and psychogenic causes (factitious disorder, somatization/conversion disorder).

Related Experiment Videos

  • Case reports illustrate diagnostic approaches for PVCM.
  • Management strategies are etiology-dependent, encompassing speech therapy, pharmacologic interventions, behavioral modification, and surgery.

    • Implications:

    • Recognizing diverse PVCM causes enables otolaryngologists to develop targeted diagnostic and treatment plans.
    • This classification system can improve patient outcomes by guiding appropriate interventions.
    • Further research into the specific mechanisms of each PVCM subtype is warranted.