Evidence map›Paper›PMID 38821183›Full record

ArticleChest2024

Quantifying Diaphragm Blood Flow With Contrast-Enhanced Ultrasound in Humans.

Jordan D Bird, Megan L Lance, Ty R W Banser, Scott F Thrall, Paul D Cotton, Jonathan R Lindner, Neil D Eves, Paolo B Dominelli, Glen E Foster

Abstract read
In one paragraph

Article in Chest, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Trial
  2. Article
  3. Review
  4. Ultrasound innovations in diaphragm assessment: an integrative review of expanding clinical applications.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  5. Article
  6. Review
  7. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Jordan D BirdCentre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.
Megan L LanceCentre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.
Ty R W BanserCentre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.
Scott F ThrallCentre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.
Paul D CottonCentre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.
Jonathan R LindnerRobert M. Berne Cardiovascular Research Center, Division of Cardiovascular Medicine, University of Virginia, Charlottesville, VA.
Neil D EvesCentre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.
Paolo B DominelliDepartment of Kinesiology and Health Sciences, University of Waterloo, Waterloo, ON, Canada.
Glen E FosterCentre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada. Electronic address: glen.foster@ubc.ca.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite the known interplay between blood flow and function, to our knowledge, there is currently no minimally invasive method to monitor diaphragm hemodynamics. We used contrast-enhanced ultrasound to quantify relative diaphragm blood flow (Q˙ RESEARCH QUESTION: Can we validate what is, to our knowledge, the first minimally invasive method to measure relative diaphragm blood flow in humans? STUDY DESIGN AND

methodsQuantitative contrast-enhanced ultrasound of the costal diaphragm was performed in healthy participants (10 male participants, 6 female participants; mean age 28 ± 5 years; BMI 22.8 ± 2.0 kg/m) during unloaded breathing and three stages of loaded breathing on two separate days. Gastric and esophageal balloon catheters measured transdiaphragmatic pressure. Ultrasonography was performed during a constant-rate IV infusion of lipid-stabilized microbubbles following each stage. Ultrasound images were acquired after a destruction-replenishment sequence and diaphragm specific time-intensity data were used to determine Q˙

resultsTransdiaphragmatic pressure for unloaded and each loading stage were 15.2 ± 0.8, 26.1 ± 0.8, 34.6 ± 0.8, and 40.0 ± 0.8 percentage of the maximum, respectively. Q˙

interpretationRelative Q˙

Indexed as

Contrast MediaDiaphragmUltrasonographyAdultBlood Flow VelocityFemaleHealthy VolunteersHemodynamicsHumansMaleMicrobubblesRegional Blood FlowReproducibility of ResultsYoung AdultContrast Mediablood circulationcontrast-enhanced ultrasounddiaphragmregional blood flowvalidation study

Identifiers

PMID38821183
PMCPMC11492223

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.