Evidence map›Paper›PMID 31276041›Full record

ArticleJGH open : an open access journal of gastroenterology and hepatology2019

Reevaluating our understanding of lactulose breath tests by incorporating hydrogen sulfide measurements.

Aleksandr Birg, Steve Hu, Henry C Lin

Abstract read
In one paragraph

Article in JGH open : an open access journal of gastroenterology and hepatology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Review
  5. The Role of Bacteria-Derived Hydrogen Sulfide in Multiple Axes of Disease.International journal of molecular sciences · 2025
    Review
  6. Article
  7. Review
  8. Article
  9. Detection of PPB-Level HACS sensors · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. 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

3 authors.

Aleksandr BirgMedicine Service New Mexico VA Health Care System Albuquerque New Mexico USA.ORCID https://orcid.org/0000-0002-1156-9783
Steve HuMedicine Service New Mexico VA Health Care System Albuquerque New Mexico USA.
Henry C LinMedicine Service New Mexico VA Health Care System Albuquerque New Mexico USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimBreath testing has become a commonly used tool in gastroenterology to evaluate changes in the fermentation pattern of the gut microbiome. Currently, hydrogen and methane gas concentrations are measured in breath testing and evaluated against specific cut-off values for interpretation as normal or abnormal. However, microbial gas kinetics is a complex process that is not currently fully considered when interpreting breath gas results. Gas exchange between hydrogen producers and hydrogen consumers (methanogens and sulfate-reducing bacteria) is a process whereby hydrogen availability is determined by both its production and removal. Hydrogen sulfide is a crucial gas involved in this process as it is a major hydrogen-consumptive pathway involved in energy exchange.

methodsThis is a cross-sectional study evaluating lactulose breath testing with the inclusion of hydrogen sulfide measurements in patients referred for breath testing for gastrointestinal symptoms of bloating, excessive gas, and/or abdominal pain.

resultsA total of 159 patients were analyzed between October 2016 and June 2017. Mean hydrogen concentrations with a positive trend through a 3-h period (

conclusionBy incorporating energy exchange in the interpretation of the lactulose breath test, we reevaluated specific breath gas profiles, including those commonly described as "hydrogen nonproducers" and the "double-peak" phenomenon.

Indexed as

breath testshydrogenhydrogen sulfidemethanemicrobiome

Identifiers

PMID31276041
PMCPMC6586573

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.