Esophageal manometry is a diagnostic test for esophageal spasms and other swallowing disorders. It measures the function of the lower esophageal sphincter, the band of muscle at the end of the esophagus that allows food to pass into the stomach while also preventing the stomach contents from backing up into the esophagus. The test shows whether or not the esophagus can move food into the stomach effectively by measuring the contractions of the esophagus when swallowing.

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