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. 2018 Jul 25;5(1):e000210. doi: 10.1136/bmjgast-2018-000210

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© Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Summary outline of the various probabilities when encountering EGJOO, with or without associated oesophageal body contractility abnormalities, using Chicago Classification (CC) V.3 criteria. In this proposed scheme, we start with the recognition of EGJOO using median integrated residual pressure (IRP) >15 mm Hg as an essential high-resolution manometry (HRM) criterion. We then proceed to independently assess the oesophageal body contractility using CC V.3 criteria and classify it as normal or abnormal, such as achalasia, IEM, DES (including jackhammer oesophagus) or combined IEM+DES. DES, diffuse oesophageal spasm; EGJOO, oesophagogastric junction outflow obstruction; IEM, ineffective oesophageal motility.

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