Evidence map›Paper›PMID 28074151›Full record

ArticleBMJ open gastroenterology2016

Clinical and pH study characteristics in reflux patients with and without ineffective oesophageal motility (IEM).

George Triadafilopoulos, Apurva Tandon, Katerina P Shetler, John Clarke

Abstract read
In one paragraph

Article in BMJ open gastroenterology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–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

17 citing papers in PubMed.

  1. Article
  2. Future perspectives in esophageal manometry.World journal of gastrointestinal surgery · 2025
    Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Observational
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. VALIDATION OF A NEW WATER-PERFUSED HIGH-RESOLUTION MANOMETRY SYSTEM.Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery · 2021
    Article
  15. Review
  16. Article
  17. 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

4 authors.

George TriadafilopoulosSilicon Valley Gastroenterology, Mountain View, California, USA; Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, California, USA.
Apurva TandonSilicon Valley Gastroenterology , Mountain View, California , USA.
Katerina P ShetlerDepartment of Gastroenterology , Palo Alto Medical Foundation , Mountain View, California , USA.
John ClarkeDivision of Gastroenterology and Hepatology , Stanford University School of Medicine , Stanford, California , USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aetiology and clinical impact of ineffective oesophageal motility (IEM) remain poorly understood, but the condition is thought to worsen supine gastro-oesophageal acid reflux (GERD).

aimsIn this retrospective cohort analysis of symptomatic patients with abnormal oesophageal acid exposure, we sought to determine any clinical or functional characteristics that would distinguish those with normal peristalsis from those with IEM, defined using the Chicago classification. We hypothesised that the impaired oesophageal clearance in IEM would be contributing to more severe degrees of pathological acid exposure, as well as clinical and endoscopic GERD severity.

methodsConsecutive symptomatic patients with GERD underwent clinical, endoscopic and functional evaluation that included high-resolution impedance manometry (HRIM) and ambulatory pH monitoring performed 'off' acid suppressive therapy.

resultsOf the 114 patients with abnormal oesophageal acid exposure, 71 had normal oesophageal motility by HRIM and 43 were diagnosed with IEM (38% prevalence). Age, gender and symptom duration were similar between the two groups. Both groups had similar magnitude and frequency of symptoms, making a distinction clinically impossible. Endoscopically, the two groups had similar rates of erosive disease, hiatal hernia and Barrett's oesophagus. Ambulatory pH, proton pump inhibitor (PPI) dosage and PPI response rates were also similar. Nevertheless, patients with IEM had significantly more impairment of oesophageal clearance (mean 56.9±6.4) than those with normal motility (mean 32.4±5.0) (p<0.003).

conclusionsSymptomatic patients with IEM exhibit significant impairment of oesophageal clearance but are otherwise clinically indistinguishable from those with normal oesophageal motility and have a similar prevalence of erosive disease and pathological acid exposure.

Indexed as

GASTROESOPHAGEAL REFLUX DISEASEMANOMETRYOESOPHAGEAL MOTILITY DISORDEROESOPHAGEAL pH MONITORINGOESOPHAGEAL PHYSIOLOGY

Identifiers

PMID28074151
PMCPMC5174815

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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.