Evidence map›Paper›PMID 33729668›Full record

ReviewNeurogastroenterology and motility2021

Chicago classification version 4.0

Mark R Fox, Rami Sweis, Rena Yadlapati, John Pandolfino, Albis Hani, Claudia Defilippi, Tack Jan, Nathalie Rommel

Abstract readReviewTechnical Report
In one paragraph

Review in Neurogastroenterology and motility, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Guideline
  2. Guideline
  3. Pooled it
  4. Article
  5. Article
  6. Article
  7. Utilization trends for esophageal motility testing in the United States.Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus · 2026
    Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Future perspectives in esophageal manometry.World journal of gastrointestinal surgery · 2025
    Review
  16. Article
  17. Review
  18. Review
  19. Normal Values in Esophageal High-Resolution Manometry Performed Using 36-Channel Water-Perfused Catheter or Solid-State Catheter.The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology · 2025
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Mark R FoxDepartment of Gastroenterology and Hepatology, University Hospital Zürich, Zürich, Switzerland.ORCID 0000-0003-4394-5584
Rami SweisDigestive Function: Basel, Laboratory and Clinic for Motility Disorders and Functional Digestive Diseases, Arlesheim, Switzerland.ORCID 0000-0002-3742-5163
Rena YadlapatiCenter for Esophageal Diseases, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA.ORCID 0000-0002-7872-2033
John PandolfinoFeinberg School of Medicine, Department of Medicine, Northwestern University, Chicago, IL, USA.ORCID 0000-0002-4993-9559
Albis HaniPontificia Universidad Javeriana-Hospital San Ignacio, Bogota, Colombia.
Claudia DefilippiUniversity Hospital, University of Chile, Santiago, Chile.
Tack JanUniversity College London Hospital, London, UK.ORCID 0000-0002-3206-6704
Nathalie RommelTranslational Research in GastroIntestinal Disorders (TARGID, University of Leuven, Leuven, Belgium.ORCID 0000-0001-5675-7334

Funding

Northwestern University Clinical and Translational Science Institute (NUCATS)UL1TR001422 · NCATS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI D'AQUILA, RICHARD · 2015 to 2023
$56.8M
Role of altered response to volumetric distension in esophageal diseaseP01DK117824 · NIDDK · NORTHWESTERN UNIVERSITY AT CHICAGO · PI PANDOLFINO, JOHN E · 2018 to 2022
$7.3M
NCATS NIH HHS UL1 TR001422NIDDK NIH HHS P01 DK117824
6 · The paper itself

Abstract

The Chicago Classification v4.0 (CCv4.0) is the updated classification scheme for esophageal motility disorders using metrics from high-resolution manometry (HRM). A key feature of CCv.4.0 is the more rigorous and expansive protocol that incorporates single wet swallows acquired in different positions (supine, upright) and provocative testing, including multiple rapid swallows and rapid drink challenge. Additionally, solid bolus swallows, solid test meal, and/or pharmacologic provocation can be used to identify clinically relevant motility disorders and other conditions (eg, rumination) that occur during and after meals. The acquisition and analysis for performing these tests and the evidence supporting their inclusion in the Chicago Classification protocol is detailed in this technical review. Provocative tests are designed to increase the diagnostic sensitivity and specificity of HRM studies for disorders of esophageal motility. These changes attempt to minimize ambiguity in prior iterations of Chicago Classification, decrease the proportion of HRM studies that deliver inconclusive diagnoses and increase the number of patients with a clinically relevant diagnosis that can direct effective therapy. Another aim in establishing a standard manometry protocol for motility laboratories around the world is to facilitate procedural consistency, improve diagnostic reliability, and promote collaborative research.

Indexed as

DeglutitionEsophageal Motility DisordersEsophagusHumansManometryPatient Positioning

Identifiers

PMID33729668
PMCPMC8268048

What OpenQuestion holds

Textmetadata
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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.