Table 1.

Chicago Classification for esophageal motor disorders

Achalasia
Type I		IRP>10 with absent esophageal peristalsis
Type II		IRP≥15 with panesophageal pressurization with ≥20% premature contractions, but no peristaltic propagation
Type III		IRP≥17 with ≥20% premature contractions, but no peristaltic propagation
EGJOO		IRP≥15 with some instances of intact peristalsis or weak peristalsis with small breaks such that the criteria for achalasia are not met
Jackhammer esophagus		Normal IRP with DCI >8000
EGJOO with Jackhammer		Elevated IRP with DCI>8000
Distal Esophageal Spasm		Normal IRP with ≥20% premature contractions