Evidence map›Paper›PMID 32608147›Full record

ArticleNeurogastroenterology and motility2021

Achalasia subtypes can be identified with functional luminal imaging probe (FLIP) panometry using a supervised machine learning process.

Dustin A Carlson, Wenjun Kou, Katharine P Rooney, Alexandra J Baumann, Erica Donnan, Joseph R Triggs, Ezra N Teitelbaum, Amy Holmstrom, Eric Hungness, Sajiv Sethi and 2 more

Abstract read
In one paragraph

Article 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 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

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

  1. Pooled it
  2. Pooled it
  3. Review
  4. Future perspectives in esophageal manometry.World journal of gastrointestinal surgery · 2025
    Review
  5. Article
  6. Review
  7. Article
  8. Functional Lumen Imaging Probe Panometry.Gastrointestinal endoscopy clinics of North America · 2025
    Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Modern Achalasia: Diagnosis, Classification, and Treatment.Journal of neurogastroenterology and motility · 2023
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Dysphagia: Novel and Emerging Diagnostic Modalities.Gastroenterology clinics of North America · 2021
    Review
  20. Article
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

12 authors.

Dustin A CarlsonDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.ORCID 0000-0002-1702-7758
Wenjun KouDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.ORCID 0000-0003-2582-2070
Katharine P RooneyDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Alexandra J BaumannDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Erica DonnanDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Joseph R TriggsDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Ezra N TeitelbaumDepartment of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Amy HolmstromDepartment of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Eric HungnessDepartment of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
Sajiv SethiDepartment of Medicine, Division of Gastroenterology, University of South Florida, Tampa, FL, USA.
Peter J KahrilasDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
John E PandolfinoDepartment of Medicine, Division of Gastroenterology and Hepatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.

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

backgroundAchalasia subtypes on high-resolution manometry (HRM) prognosticate treatment response and help direct management plan. We aimed to utilize parameters of distension-induced contractility and pressurization on functional luminal imaging probe (FLIP) panometry and machine learning to predict HRM achalasia subtypes.

methodsOne hundred eighty adult patients with treatment-naïve achalasia defined by HRM per Chicago Classification (40 type I, 99 type II, 41 type III achalasia) who underwent FLIP panometry were included: 140 patients were used as the training cohort and 40 patients as the test cohort. FLIP panometry studies performed with 16-cm FLIP assemblies were retrospectively analyzed to assess distensive pressure and distension-induced esophageal contractility. Correlation analysis, single tree, and random forest were adopted to develop classification trees to identify achalasia subtypes. KEY

resultsIntra-balloon pressure at 60 mL fill volume, and proportions of patients with absent contractile response, repetitive retrograde contractile pattern, occluding contractions, sustained occluding contractions (SOC), contraction-associated pressure changes >10 mm Hg all differed between HRM achalasia subtypes and were used to build the decision tree-based classification model. The model identified spastic (type III) vs non-spastic (types I and II) achalasia with 90% and 78% accuracy in the train and test cohorts, respectively. Achalasia subtypes I, II, and III were identified with 71% and 55% accuracy in the train and test cohorts, respectively. CONCLUSIONS AND INFERENCES: Using a supervised machine learning process, a preliminary model was developed that distinguished type III achalasia from non-spastic achalasia with FLIP panometry. Further refinement of the measurements and more experience (data) may improve its ability for clinically relevant application.

Indexed as

Diagnostic Techniques, Digestive SystemSupervised Machine LearningAdultAgedElectric ImpedanceEndoscopy, Digestive SystemEsophageal AchalasiaEsophagusFemaleHumansMaleManometryMiddle AgedOrgan Sizedysphagiaendoscopyimpedancemanometryperistalsis

Identifiers

PMID32608147
PMCPMC7775338

What OpenQuestion holds

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Registered trials

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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.