Esophageal motility can be described using the Chicago classification. The authors are from multiple institutions in Europe, North America, China and Australia.
Analysis: high resolution esophageal pressure topography
Parameters:
(1) integrated relaxation pressure (IRP)
(2) distal contractile integral (DCI) in mm Hg per second per cm
(3) distal latency (DL), the interval between the upper esophageal sphincter relaxation and the contractile deceleration point
(4) peristalsis
(5) peristaltic breaks in cm
Integrated Relaxation Pressure Above the Upper Limit of Normal