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Normal and Abnormal Esophageal Motilitya* 

Normal and Abnormal Esophageal Motilitya*
Chapter:
Normal and Abnormal Esophageal Motilitya*
Author(s):

David A. Katzka

DOI:
10.1093/med/9780199373338.003.0003
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date: 30 November 2020

The esophagus has 3 major functions: to facilitate passage of food and fluid boluses into the esophagus and not the airway, to propel food boluses downward to the stomach, and to keep stomach contents from refluxing upward. The esophagus accomplishes these functions by its tubular anatomy and by motility that involves the contraction and relaxation of sphincter muscles and precisely timed peristaltic waves. When these functions go awry, the most common symptoms are dysphagia and gastroesophageal reflux disease. This chapter focuses primarily on how the food bolus is handled by the esophagus. Swallowing dysfunction can be classified as oropharyngeal swallowing disorders, esophageal body disorders, and esophageal motility disorders. Pathology, diagnosis, and treatment are discussed.

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