International Journal of Gastrointestinal Intervention

Table. 1. Table 1

The Chicago Classification of Esophageal Motility Disorders v3.0

Motility disorder	Manometric criteria
Jackhammer esophagus	At least two swallows with DCI > 8,000 mmHg·s·cm; hypercontractility may involve, or even be localized to, the LES
Diffuse esophageal spasm	Normal median IRP, ≥ 20% premature contractions with DCI > 450 mmHg·s·cm
Esophagogastric junction outflow obstruction	Elevated median IRP (> 15 mmHg), sufficient evidence of peristalsis such that criteria for types I–III achalasia are not met

Data from the article of Kahrilas et al (Neurogastroenterol Motil. 2015;27:160-74).¹

DCI, distal contractile integral; LES, lower esophageal sphincter; IRP, integrated relaxation pressure.

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