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Updated: Dec 4, 2025

In Vivo Evaluation of the Mechanical and Viscoelastic Properties of the Rat Tongue
Published on: July 6, 2017
Muscle Tension Dysphagia: Contributing Factors and Treatment Efficacy
Christina H Kang1, Nan Zhang2, David G Lott1
1Department of Otorhinolaryngology-Head and Neck Surgery, Division of Laryngology, Mayo Clinic Arizona, Phoenix, Arizona, USA.
Objective:
To determine factors contributing to disease etiology and treatment efficacy.
Study Design:
Original Report.
Setting:
Tertiary academic center.
Methods:
IRB approved prospective study of 20 patients with reported dysphagia who exhibited normal oropharyngeal and esophageal swallowing function as evidenced by videofluoroscopic swallow study, esophagogastroduodenoscopy, high-resolution esophageal manometry with stationary impedance, and Bravo pH probe off proton pump inhibitor. Patients underwent speech-language pathology intervention.
Results:
Atypical laryngeal muscle tension was present in 100% of patients. Forty percent of patients had diagnosed positive gastroesophageal reflux disease. Sixty-five percent of patients showed signs of non-specific laryngeal inflammation and laryngeal hyperresponsiveness during strobolaryngoscopy. All patients reported a mean of 90% recovery by the completion of voice therapy directed toward unloading muscle tension.
Conclusion:
The study results suggest an association between laryngeal muscle tension and these patients' dysphagia symptoms regardless of associated conditions. Speech-language pathology intervention showed high treatment efficacy.
Level Of Evidence:
2c- Outcomes research.
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