Evidence map›Paper›PMID 24917995›Full record

ArticleUnited European gastroenterology journal2013

Pharyngeal pH alone is not reliable for the detection of pharyngeal reflux events: A study with oesophageal and pharyngeal pH-impedance monitoring.

Marie Desjardin, Sabine Roman, Stanislas Bruley des Varannes, Guillaume Gourcerol, Benoit Coffin, Alain Ropert, François Mion, Frank Zerbib

Abstract read
In one paragraph

Article in United European gastroenterology journal, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
  2. Salivary pH testing in Laryngopharyngeal Reflux Disease.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2024
    Article
  3. Review
  4. Article
  5. Review
  6. How I Approach Laryngopharyngoesophageal Reflux (LPR).Current gastroenterology reports · 2021
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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.

Marie DesjardinCHU Bordeaux, Bordeaux, France ; Bordeaux Segalen University, Bordeaux, France.
Sabine RomanHospices Civils de Lyon, Lyon, France ; Claude Bernard Lyon 1 University, Lyon, France.
Stanislas Bruley des VarannesCHU Nantes, Nantes, France ; Nantes University, Nantes, France.
Guillaume GourcerolINSERM 0204, Rouen, France.
Benoit CoffinAssistance Publique-Hôpitaux de Paris, Colombes, France ; INSERM U987, Boulogne Billancourt, France.
Alain RopertCHU Rennes, Rennes, France.
François MionHospices Civils de Lyon, Lyon, France ; Claude Bernard Lyon 1 University, Lyon, France.
Frank ZerbibCHU Bordeaux, Bordeaux, France ; Bordeaux Segalen University, Bordeaux, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPharyngeal pH probes and pH-impedance catheters have been developed for the diagnosis of laryngo-pharyngeal reflux.

objectiveTo determine the reliability of pharyngeal pH alone for the detection of pharyngeal reflux events.

methods24-h pH-impedance recordings performed in 45 healthy subjects with a bifurcated probe for detection of pharyngeal and oesophageal reflux events were reviewed. Pharyngeal pH drops to below 4 and 5 were analysed for the simultaneous occurrence of pharyngeal reflux, gastro-oesophageal reflux, and swallows, according to impedance patterns.

resultsOnly 7.0% of pharyngeal pH drops to below 5 identified with impedance corresponded to pharyngeal reflux, while 92.6% were related to swallows and 10.2 and 13.3% were associated with proximal and distal gastro-oesophageal reflux events, respectively. Of pharyngeal pH drops to below 4, 13.2% were related to pharyngeal reflux, 87.5% were related to swallows, and 18.1 and 21.5% were associated with proximal and distal gastro-oesophageal reflux events, respectively.

conclusionsThis study demonstrates that pharyngeal pH alone is not reliable for the detection of pharyngeal reflux and that adding distal oesophageal pH analysis is not helpful. The only reliable analysis should take into account impedance patterns demonstrating the presence of pharyngeal reflux event preceded by a distal and proximal reflux event within the oesophagus.

Indexed as

Gastro-oesophageal refluxlaryngo-pharyngeal refluxoesophageal impedancepharyngeal pH

Identifiers

PMID24917995
PMCPMC4040740

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.