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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). [ 1 ] Indications
In gastroenterology, esophageal pH monitoring is the current gold standard for diagnosis of gastroesophageal reflux disease (GERD). It provides direct physiologic measurement of acid in the esophagus and is the most objective method to document reflux disease, assess the severity of the disease and monitor the response of the disease to medical ...
An esophageal motility disorder (EMD) is any medical disorder resulting from dysfunction of the coordinated movement of esophagus, which causes dysphagia (i.e. difficulty in swallowing, regurgitation of food). [1] Primary motility disorders are: [1] Achalasia; Diffuse esophageal spasm; Nutcracker esophagus; Hypertensive lower esophageal sphincter
The diagnosis is made by an esophageal motility study (esophageal manometry), which evaluates the pressure of the esophagus at various points along its length. The term "nutcracker esophagus" comes from the finding of increased pressures during peristalsis , with a diagnosis made when pressures exceed 180 mmHg; this has been likened to the ...
Esophageal manometry is not recommended for use in the diagnosis, being recommended only prior to surgery. [42] Ambulatory esophageal pH monitoring may be useful in those who do not improve after PPIs and is not needed in those in whom Barrett's esophagus is seen. [42] Investigation for H. pylori is not usually needed. [42]
Esophageal spasm is a disorder of motility of the esophagus. [2] There are two types of esophageal spasm: [2] Diffuse or distal esophageal spasm (DES), where there is uncoordinated esophageal contractions; Nutcracker esophagus (NE) also known as hypertensive peristalsis, where the contractions are coordinated but with an excessive amplitude.
Functional Lumen Imaging Probe (FLIP) is a test used to evaluate the function of the esophagus, by measuring the dimensions of the esophageal lumen using impedance planimetry. Typically performed with sedation during upper endoscopy , FLIP is used to evaluate for esophageal motility disorders , such as achalasia , diffuse esophageal spasm , etc ...
High-resolution manometry (HRM) is a gastrointestinal motility diagnostic system that measures intraluminal pressure activity in the gastrointestinal tract using a series of closely spaced pressure sensors. For a manometry system to be classified as "high-resolution" as opposed to "conventional", the pressure sensors need to be spaced at most 1 ...