Evidence map›Paper›PMID 32710165›Full record

Trial reportLung2020

Change in Dynamic Hyperinflation After Bronchoscopic Lung Volume Reduction in Patients with Emphysema.

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

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

Trial report in Lung, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.6field-weighted citation impact, top 27% 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

3 citing papers in PubMed, 8 citations in OpenAlex.

  1. Trial
  2. Review
  3. 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

5 authors at 1 institution in 1 country.

Marlies van DijkDepartment of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands. m.van.dijk05@umcg.nl.ORCID 0000-0002-2043-1276
Karin KloosterDepartment of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands.
Jorine E HartmanDepartment of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands.
Nick H T Ten HackenDepartment of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands.
Dirk-Jan SlebosDepartment of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, University of Groningen, Groningen, The Netherlands.
University Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeIn patients with severe emphysema, dynamic hyperinflation is superimposed on top of already existing static hyperinflation. Static hyperinflation reduces significantly after bronchoscopic lung volume reduction (BLVR). In this study, we investigated the effect of BLVR compared to standard of care (SoC) on dynamic hyperinflation.

methodsDynamic hyperinflation was induced by a manually paced tachypnea test (MPT) and was defined by change in inspiratory capacity (IC) measured before and after MPT. Static and dynamic hyperinflation measurements were performed both at baseline and 6 months after BLVR with endobronchial valves or coils (treatment group) or SoC (control group).

resultsEighteen patients underwent BLVR (78% female, 57 (43-67) years, FEV

conclusionBronchoscopic lung volume reduction increases the ability for dynamic hyperinflation in patients with severe emphysema. We propose this is a consequence of improved static hyperinflation.

Indexed as

LungPneumonectomyPulmonary EmphysemaFemaleHumansLung Volume MeasurementsMaleMiddle AgedNetherlandsOutcome Assessment, Health CareResidual VolumeRespiratory Function TestsSeverity of Illness IndexTomography, X-Ray ComputedWalk TestBronchoscopic lung volume reductionCOPDDynamic hyperinflationEmphysema

Identifiers

PMID32710165
PMCPMC7502448
OpenAlexW3045236839

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.