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Related Experiment Videos

Videomanofluorometric study in amyotrophic lateral sclerosis.

Ryuzaburo Higo1, Niro Tayama, Takeshi Watanabe

  • 1Department of Otolaryngology, Faculty of Medicine, University of Tokyo, Japan. rhigo-tky@umin.ac.jp

The Laryngoscope
|August 2, 2002
PubMed
Summary

Amyotrophic lateral sclerosis (ALS) patients experience progressive swallowing difficulties, with decreased oropharyngeal pressure and potential upper esophageal sphincter spasm leading to aspiration. Videomanofluorometry tracks these changes effectively.

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Area of Science:

  • Neurology
  • Gastroenterology
  • Speech-Language Pathology

Background:

  • Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease affecting motor neurons.
  • Swallowing dysfunction (dysphagia) is a common and serious complication in ALS, impacting nutritional status and quality of life.
  • Understanding the temporal progression of swallowing impairments is crucial for timely intervention.

Purpose of the Study:

  • To investigate the sequential changes in swallowing function over time in patients with ALS.
  • To identify specific patterns of pressure decline and sphincter dysfunction using videomanofluorometry.

Main Methods:

  • Videomanofluorometry, a combined videofluoroscopic and manometric assessment, was performed on 21 ALS patients.
  • Patients were grouped by disease type and time since bulbar symptom onset.

Related Experiment Videos

  • Longitudinal follow-up assessments were conducted on some patients.

    • Main Results:

    • Oropharyngeal swallowing pressure decreased significantly within 6 months of bulbar symptom onset.
    • Hypopharyngeal pressure remained relatively stable for up to 1 year.
    • Upper esophageal sphincter spasm was observed in some patients, correlating with aspiration events.

    Conclusions:

    • Progressive decline in oropharyngeal and hypopharyngeal pressures increases aspiration risk in ALS.
    • Upper esophageal sphincter spasm is a significant contributor to aspiration in ALS patients.
    • Videomanofluorometry is essential for comprehensive swallowing assessment and monitoring in ALS.