Fig. 1. High resolution manometry in a case with Jackhammer esophagus. (A) Pre-POEM manometry revealing a high distal contractile integral (13,298 mmHg.s.cm). A normal relaxation of lower esophageal sphincter can be appreciated. (B) Post-POEM manometry in the same case revealing normalization of the distal contractile integral (866 mmHg.s.cm). POEM, per-oral endoscopic myotomy; UES, upper esophageal sphincter; LES, lower esophageal sphincter; CDP, contractile deceleration point.

Int J Gastrointest Interv 2020;9:67~71 https://doi.org/10.18528/ijgii200003

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