An esophageal motility study (EMS) or esophageal manometry is a test to assess motor function of the upper esophageal sphincter (UES), esophageal body and lower esophageal sphincter (LES).
Read more about Esophageal Motility Study: Indications, Procedure, Recent Advances
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“Very useless things we neglect, till they become old and useless enough to be put in Museums: and so very important things we study till, when they become important enough, we ignore them—and rightly.”
—Samuel Butler (1835–1902)