Bridging the Gap between Advancements in the Evolution of Diagnosis and Treatment towards Better Outcomes in Achalasia

Figure 1

Chicago classification of achalasia based on HRMPT. (a) Type I (classic achalasia) refers to patients with absent peristalsis, no pressurization within the esophageal body, and high integrated relaxation pressure (IRP). (b) Type II (achalasia with compression) refers to patients with absent peristalsis and contractile activity, panesophageal pressurization greater than 30 mmHg, and a high IRP. (c) Type III (spastic achalasia) is associated with absent peristalsis and 2 or more spastic contractions with or without periods of compartmentalized pressurization and a high IRP.

(a)

(b)

(c)