Esophageal motility disorders in terms of pressure topography: The Chicago classification

Research output: Contribution to journalArticlepeer-review

243 Scopus citations


Two recent advances have revolutionized the performance of clinical esophageal manometry; the introduction of practical high resolution manometry (HRM) systems and the development of sophisticated algorithms to display the expanded manometric dataset as pressure topography plots. We utilized a large clinical experience of 400 consecutive patients and 75 control subjects to develop a systematic approach to analyzing esophageal motility using HRM and pressure topography plots. The resultant classification scheme has been named as the Chicago Classification of esophageal motility. Two strengths of pressure topography plots compared with conventional manometric recordings were the ability to (1) delineate the spatial limits, vigor, and integrity of individual contractile segments along the esophagus and (2) to distinguish between loci of compartmentalized intraesophageal pressurization and rapidly propagated contractions. Making these distinctions objectified the identification of distal esophageal spasm, vigorous achalasia, functional obstruction, and nutcracker esophagus subtypes. Applying these distinctions made the diagnosis of spastic disorders quite rare: spasm in 1.5% of patients, vigorous achalasia in 1.5%, and a newly defined entity, spastic nutcracker, in 1.5%. Ultimately, further clinical experience will be the judge, but it is our expectation that pressure topography analysis of HRM data, along with its well-defined functional implications, will prove valuable in the clinical management of esophageal motility disorders.

Original languageEnglish (US)
Pages (from-to)627-635
Number of pages9
JournalJournal of Clinical Gastroenterology
Issue number5
StatePublished - May 2008


  • Distal esophageal spasm
  • High resolution manometry
  • Nutcracker esophagus

ASJC Scopus subject areas

  • Gastroenterology


Dive into the research topics of 'Esophageal motility disorders in terms of pressure topography: The Chicago classification'. Together they form a unique fingerprint.

Cite this