Evidence map›Paper›PMID 32021155›Full record

Observational studyInternational journal of chronic obstructive pulmonary disease2020

Relationships Between Forced Oscillatory Impedance and 6-minute Walk Distance After Pulmonary Rehabilitation in COPD.

Sabine C Zimmermann, Cindy Thamrin, Andrew Sl Chan, Amy Bertolin, David G Chapman, Gregory G King

Open access · goldAbstract readComparative StudyObservational Study
In one paragraph

Observational study in International journal of chronic obstructive pulmonary disease, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.0field-weighted citation impact, top 21% 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

9 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Observational
  5. Article
  6. Clinical significance and applications of oscillometry.European respiratory review : an official journal of the European Respiratory Society · 2022
    Review
  7. Article
  8. Article
  9. Evaluation of Exertional Ventilatory Parameters Using Oscillometry in COPD.International journal of chronic obstructive pulmonary disease · 2020
    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 2 institutions in 1 country.

Sabine C ZimmermannThe Woolcock Emphysema Centre, Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW 2037, Australia.ORCID 0000-0002-0658-9552
Cindy ThamrinThe Woolcock Emphysema Centre, Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW 2037, Australia.ORCID 0000-0003-3284-3558
Andrew Sl ChanThe Northern Clinical School, Faculty of Medicine and Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia.ORCID 0000-0003-2559-3706
Amy BertolinThe Woolcock Emphysema Centre, Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW 2037, Australia.
David G ChapmanThe Woolcock Emphysema Centre, Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW 2037, Australia.ORCID 0000-0002-8211-1817
Gregory G KingThe Woolcock Emphysema Centre, Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW 2037, Australia.
The University of Sydney · AUUniversity of Technology Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rationale: Pulmonary rehabilitation for chronic obstructive pulmonary disease (COPD) reduces dyspnoea and improves exercise capacity and quality of life. The improvement in exercise capacity is variable and unpredictable, however. Respiratory system impedance obtained by forced oscillation technique (FOT) as a measure of ventilatory impairment in COPD may relate to improvement in exercise capacity with pulmonary rehabilitation. We aimed to determine if baseline FOT parameters relate to changes in exercise capacity following pulmonary rehabilitation. Methods: At the start of rehabilitation, 15 COPD subjects (mean(SD) 75.2(6.1) years, FEV1 z-score -2.61(0.84)) had measurements by FOT, spirometry, plethysmographic lung volumes and 6-minute walk distance (6MWD). Respiratory system resistance (Rrs) and reactance (Xrs) parameters as the mean over all breaths (R Results: At baseline, Xrs measures were unrelated to 6MWD. X Conclusion: Baseline reactance parameters may be helpful in predicting those patients with COPD at most risk of loss of exercise capacity following completion of pulmonary rehabilitation.

Indexed as

Exercise ToleranceRespiratory Function TestsWalk TestAgedAged, 80 and overFemaleForced Expiratory VolumeHumansLungMaleOscillometryPilot ProjectsPredictive Value of TestsProspective StudiesPulmonary Disease, Chronic ObstructiveRecovery of FunctionCOPDforced oscillation techniquepulmonary rehabilitationquality of lifereactancesix-minute walk test

Identifiers

PMID32021155
PMCPMC6982450
OpenAlexW3000282405

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.