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KMID : 1812020100160010090
Journal of Neurogastroenterology and Motility
2010 Volume.16 No. 1 p.90 ~ p.93
Recent Concept in Interpreting High-Resolution Manometry
Park Moo-In

Abstract
Esophageal manometry is considered the gold standard for assessing esophageal motor function. Although conventional manometry has been widely used to evaluate esophageal motor function, this is not fully satisfactory for explaining esophageal symptoms. High-resolution manometry (HRM) is designed to overcome the limitations of conventional manometric systems with advanced technologies. A solid-state HRM assembly with 36 solid-state sensors spaced at 1 cm intervals (Sierra Scientific Instruments Inc., Los Angeles, CA, USA) has been widely used around the world. Calibration and post-study thermal correction should be performed at each test. The HRM assembly was passed transnasally and positioned to record from the hypopharynx to the stomach. After a 5 minutes resting period to assess basal sphincter pressure, 5 mL water swallows are obtained in a supine posture. The interpretation of HRM data is still being refined. Recently, the HRM Classification Working Group revised the Chicago classification based on a systematic analysis of motility patterns in 75 control subjects and 400 consecutive patients. The below will show you a summary of the new Chicago classification of distal esophageal motility disorders to provide a practical way of interpreting HRM.
KEYWORD
Esophageal manometry, High-resolution manometry, Esophagogastric junction, Contractile front velocity, Distal contractile integral
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