Evidence map›Paper›PMID 35751633›Full record

ArticleAlimentary pharmacology & therapeutics2022

Chicago classification v4.0 protocol improves specificity and accuracy of diagnosis of oesophagogastric junction outflow obstruction.

Pierfrancesco Visaggi, Matteo Ghisa, Giulio Del Corso, Federica Baiano Svizzero, Lucia Mariani, Salvatore Tolone, Marzio Frazzoni, Andrea Buda, Massimo Bellini, Vincenzo Savarino and 4 more

Abstract read
In one paragraph

Article in Alimentary pharmacology & therapeutics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  3. High-Resolution Manometry in Treated Achalasia: Scoping Review and Novel Nomenclature.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors.

Pierfrancesco VisaggiGastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.ORCID 0000-0002-6985-5301
Matteo GhisaDivision of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy.
Giulio Del CorsoGSSI, Gran Sasso Science Institute, L'Aquila, Italy.
Federica Baiano SvizzeroGastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
Lucia MarianiGastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
Salvatore ToloneDivision of Surgery, Department of Surgery, University of Campania Luigi Vanvitelli, Caserta, Italy.
Marzio FrazzoniGastroenterology Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy.ORCID 0000-0002-8608-1563
Andrea BudaDivision of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy.
Massimo BelliniGastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
Vincenzo SavarinoDivision of Gastroenterology, Department of Internal Medicine (DIMI), University of Genoa, Genoa, Italy.ORCID 0000-0001-6803-1952
Roberto PenaginiGastroenterology and Endoscopy Unit - Department of Pathophysiology and Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico - University of Milan, Milan, Italy.ORCID 0000-0001-6918-9479
C Prakash GyawaliDivision of Gastroenterology, University Washington University School of Medicine, St. Louis, Missouri, USA.ORCID 0000-0002-3388-0660
Edoardo V SavarinoDivision of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy.ORCID 0000-0002-3187-2894
Nicola de BortoliGastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.ORCID 0000-0003-1995-1060

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChicago classification version 4.0 (CCv4.0) introduced stringent diagnostic criteria for oesophagogastric junction outflow obstruction (EGJOO), in order to increase the clinical relevance of the diagnosis, although this has not yet been demonstrated.

aimsTo determine the prevalence of EGJOO using CCv4.0 criteria in patients with CCv3.0-based EGJOO, and to assess if provocative manoeuvres can predict a conclusive CCv4.0 diagnosis of EGJOO.

methodsClinical presentation, high resolution manometry (HRM) with rapid drink challenge (RDC), and timed barium oesophagogram (TBE) data were extracted for patients diagnosed with EGJOO as per CCv3.0 between 2018 and 2020. Patients were then re-classified according to CCv4.0 criteria, using clinically relevant symptoms (dysphagia and/or chest pain), and abnormal barium emptying at 5 min on TBE. Receiver operating characteristic (ROC) analyses identified HRM predictors of EGJOO.

resultsOf 2010 HRM studies, 144 (7.2%) fulfilled CCv3.0 criteria for EGJOO (median age 61 years, 56.9% female). Upon applying CCv4.0 criteria, EGJOO prevalence decreased to 1.2%. On ROC analysis, integrated relaxation pressure during RDC (RDC-IRP) was a significant predictor of a conclusive EGJOO diagnosis by CCv4.0 criteria (area under the curve: 96.1%). The optimal RDC-IRP threshold of 16.7 mm Hg had 87% sensitivity, 97.1% specificity, 95.7% negative predictive value and 91.3% positive predictive value for a conclusive EGJOO diagnosis; lower thresholds (10 mmHg, 12 mmHg) had better sensitivity but lower specificity.

conclusionCCv4.0 criteria reduced the prevalence of EGJOO by 80%, thereby refining the diagnosis and identifying clinically relevant outflow obstruction. Elevated RDC-IRP can predict conclusive EGJOO per CCv4.0.

Indexed as

Deglutition DisordersEsophageal Motility DisordersBariumEsophagogastric JunctionFemaleHumansMaleManometryMiddle AgedBariumbarium oesophagogramChicago classificationdysphagiaEGJOOhigh-resolution manometry

Identifiers

PMID35751633
PMCPMC9544646

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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.