Evidence map›Paper›PMID 24002767›Full record

ArticleJournal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract2014

Analysis of a learning curve and predictors of intraoperative difficulty for peroral esophageal myotomy (POEM).

Ezra N Teitelbaum, Nathaniel J Soper, Fahd O Arafat, Byron F Santos, Peter J Kahrilas, John E Pandolfino, Eric S Hungness

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Article in Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 2 pooled it
9.4field-weighted citation impact, top 2% of its field
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

43 citing papers in PubMed, 2 syntheses or guidelines pooled it, 116 citations in OpenAlex.

  1. Pooled it
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  5. Saudi Gastroenterology Association (SGA) clinical care pathway and standards of care for peroral endoscopic myotomy (POEM) in achalasia.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2026
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  19. Treatment of Idiopathic Achalasia with Per-Oral Esophageal Myotomy.Techniques in gastrointestinal endoscopy · 2018
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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

7 authors at 1 institution in 1 country.

Ezra N TeitelbaumDepartment of Surgery, Northwestern University Feinberg School of Medicine, 676 North Saint Clair Street, Suite 650, Chicago, IL, 60611, USA.
Nathaniel J Soper
Fahd O Arafat
Byron F Santos
Peter J Kahrilas
John E Pandolfino
Eric S Hungness
Northwestern University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPeroral esophageal myotomy (POEM) is an endoscopic surgical operation for achalasia. Here, we analyze a single-series POEM learning curve and examine which preoperative patient factors are predictive of operative difficulty.

methodsTwo surgeons performed all POEM procedures conjointly. Nonlinear regression was used to determine the learning curve for procedure time. Preoperative patient characteristics were correlated with outcomes.

resultsThirty-six POEM procedures were performed. Total operative time did not decrease over the course of the series (mean 112 ± 36 min). Time required to complete the procedural steps of submucosal access and myotomy did decrease with experience, both exhibiting a "learning rate" of seven cases. The incidence of inadvertent mucosal perforations and the number of clips required both decreased with experience. Postoperative Eckardt scores at 1-year follow-up decreased over the course of the series. Prior endoscopic treatment, symptom duration, and esophageal width were all independently predictive of longer procedure time. Preoperative symptom duration was also positively associated with inadvertent mucosal perforation and the number of clips required.

conclusionsIn this series, overall procedure time did not decrease with experience and may not be an important marker of procedural skill for POEM. Prior endoscopic treatment, longer symptom duration, and esophageal dilatation may result in increased operative difficulty during POEM.

Indexed as

Learning CurveAdultClinical CompetenceEsophageal AchalasiaEsophageal PerforationEsophageal Sphincter, LowerEsophagoscopyEsophagusFemaleHumansIntraoperative ComplicationsMaleMiddle AgedOperative TimeOrgan SizeSurgical Instruments

Identifiers

PMID24002767
OpenAlexW2055611631

What OpenQuestion holds

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Read underepoch 390

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.