Evidence map›Paper›PMID 30983444›Full record

Trial reportJournal of medical engineering & technology2019

Non-invasive stroke volume estimation by transthoracic electrical bioimpedance

Mirae Harford, Samuel H Clark, Jodie F Smythe, Stephen Gerry, Mauricio Villarroel, Joao Jorge, Sitthichok Chaichulee, Lionel Tarassenko, Duncan Young, Peter Watkinson

Open access · hybridAbstract readClinical TrialComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Journal of medical engineering & technology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

4 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Natriuretic peptides, extracellular volume, and subclinical cardiovascular changes in chronic kidney disease stages 1-3: a pilot study.Journal of investigative medicine : the official publication of the American Federation for Clinical Research · 2022
    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

10 authors at 3 institutions in 1 country.

Mirae Harforda Critical Care Research Group, Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.ORCID http://orcid.org/0000-0003-2851-1577
Samuel H Clarkc Critical Care Department , University College London Hospitals NHS Foundation Trust , London , UK.
Jodie F Smythed Adult Intensive Care Unit , John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust , Oxford , UK.ORCID https://orcid.org/0000-0001-5486-8866
Stephen Gerrye Centre for Statistics in Medicine , University of Oxford , Oxford , UK.ORCID https://orcid.org/0000-0003-4654-7311
Mauricio Villarroelb Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK.
Joao Jorgeb Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK.ORCID https://orcid.org/0000-0003-3723-8103
Sitthichok Chaichuleeb Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK.ORCID https://orcid.org/0000-0002-3159-7925
Lionel Tarassenkob Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK.ORCID https://orcid.org/0000-0002-0118-1646
Duncan Younga Critical Care Research Group, Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.ORCID https://orcid.org/0000-0002-6838-4835
Peter Watkinsona Critical Care Research Group, Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.ORCID https://orcid.org/0000-0003-1023-3927
University of Oxford · GBJohn Radcliffe Hospital · GBUniversity College London Hospitals NHS Foundation Trust · GB

Funding

Department of Health DRF-2016-09-073Wellcome Trust
6 · The paper itself

Abstract

Thoracic electrical bioimpedance (TEB) and transthoracic echocardiography (TTE) are non-invasive methods to estimate stroke volume (SV) and cardiac output (CO). Thoracic electrical bioimpedance is not in widespread clinical use with reports of inaccurate cardiac output estimation compared to invasive monitors, particularly in non-healthy populations. We explore its use as a trend monitor by comparing it against thoracic echocardiography in fifteen healthy volunteers undergoing two physical challenges designed to vary cardiac output. Of all paired values, 54.6% showed gross trend agreement and only 1.9% showed direct disagreement between the two monitors. Our results show thoracic bioimpedance may have a role as a non-invasive cardiac output trend monitor in healthy volunteer studies.

Indexed as

Echocardiography, DopplerElectric ImpedanceStroke VolumeAdultExerciseHealthy VolunteersHumansMaleYoung AdultechocardiographyStroke volumethoracic bioimpedance

Identifiers

PMID30983444
PMCPMC6550124
OpenAlexW2936170471

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.