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Cricopharyngeal muscle dysfunction in the elderly

The elderly have abnormal high pressure, low pressure and relaxation of upper esophageal sphincter (UES) for different reasons, resulting in dysphagia in oropharynx, which is called cricopharyngeal muscle dysfunction. When uesm contracts, esophageal peristalsis begins. If some factor causes uncoordinated swallowing activity, or pharyngeal muscle contraction is invalid, cupping net, uesm is not completely relaxed or relaxed in advance, swallowing disorder can occur.


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