Dysphagia other diagnostic studies

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hamid Qazi, MD, BSc [2], Feham Tariq, MD [3]

Other diagnostic studies for dysphagia include esophageal manometry, electromyography, and electroglottograpghy.

Other diagnostics studies for dysphagia are as follows:^[1][2]

• Electromyography (EMG)
• Electroglottography (EGG) (records vocal fold movement)
• Manometry

Manometry is performed to assess motor function of the esophagus.

• High resolution manometry is recommended.
• Most commonly indicated for diagnosing esophageal dysphagia.
• Uses miniature, multichannel, water-perfused catheters or solid-state catheters
• Pressures gradients are recorded along the esophageal body and the gastroesophageal junction
• Computerized interpolation generates esophageal pressure isocontour lines.

• Facilitates differentiation between a restrictive disorder and muscular weakness in the pharyngoesophageal segment.{{#ev:youtube|795yXyvZaAs}}

• Electromyography has limited use clinically in diagnosing dysphagia.
• Two subtypes:
  • Swallowing electromyography
  • Laryngeal electromyography

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