Evidence map›Paper›PMID 33687513›Full record

Trial reportLung2021

Comparison of Multiple Diagnostic Tests to Measure Dynamic Hyperinflation in Patients with Severe Emphysema Treated with Endobronchial Coils.

Marlies van Dijk, Jorine E Hartman, Sonja W S Augustijn, Nick H T Ten Hacken, Karin Klooster, Dirk-Jan Slebos

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

Trial report in Lung, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.4field-weighted citation impact, top 37% 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

1 citing paper in PubMed, 4 citations in OpenAlex.

  1. 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

6 authors at 1 institution in 1 country.

Marlies van DijkDepartment of Pulmonary Diseases, AA11, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands. m.van.dijk05@umcg.nl.ORCID 0000-0002-2043-1276
Jorine E HartmanDepartment of Pulmonary Diseases, AA11, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands.
Sonja W S AugustijnDepartment of Pulmonary Diseases, AA11, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands.
Nick H T Ten HackenDepartment of Pulmonary Diseases, AA11, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands.
Karin KloosterDepartment of Pulmonary Diseases, AA11, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands.
Dirk-Jan SlebosDepartment of Pulmonary Diseases, AA11, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands.
University Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeFor this study, we aimed to compare dynamic hyperinflation measured by cardiopulmonary exercise testing (CPET), a six-minute walking test (6-MWT), and a manually paced tachypnea test (MPT) in patients with severe emphysema who were treated with endobronchial coils. Additionally, we investigated whether dynamic hyperinflation changed after treatment with endobronchial coils.

methodsDynamic hyperinflation was measured with CPET, 6-MWT, and an MPT in 29 patients before and after coil treatment.

resultsThere was no significant change in dynamic hyperinflation after treatment with coils. Comparison of CPET and MPT showed a strong association (rho 0.660, p < 0.001) and a moderate agreement (BA-plot, 202 ml difference in favor of MPT). There was only a moderate association of the 6-MWT with CPET (rho 0.361, p 0.024).

conclusionMPT can be a suitable alternative to CPET to measure dynamic hyperinflation in severe emphysema but may overestimate dynamic hyperinflation possibly due to a higher breathing frequency.

Indexed as

AdultAgedBronchoscopyExercise TestExercise ToleranceFemaleHumansInspiratory CapacityMaleMiddle AgedPneumonectomyProspective StudiesPulmonary EmphysemaRespiratory MechanicsCOPDDynamic hyperinflationEmphysemaEndobronchial coils

Identifiers

PMID33687513
PMCPMC8053153
OpenAlexW3135191536

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.