Evidence map›Paper›PMID 32743009›Full record

ArticleERJ open research2020

Prediction of air trapping or pulmonary hyperinflation by forced spirometry in COPD patients: results from COSYCONET.

Peter Alter, Jan Orszag, Christina Kellerer, Kathrin Kahnert, Tim Speicher, Henrik Watz, Robert Bals, Tobias Welte, Claus F Vogelmeier, Rudolf A Jörres

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in ERJ open research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01245933 (Impact of Systemic Manifestations/Comorbidities on Clinical State, Prognosis and Utilisation of Health Care Resources in Patients With COPD), which is not on this map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 10% 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.

NCT01245933 completednot on this map

Impact of Systemic Manifestations/Comorbidities on Clinical State, Prognosis and Utilisation of Health Care Resources in Patients With COPD

TypeobservationalSponsorPhilipps University MarburgRan2010 to 2023Enrolled2,741ConditionsChronic Obstructive Pulmonary Disease (COPD)
3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Review
  5. Article
  6. Observational
  7. Rheumatoid arthritis-associated airway disease: longitudinal pulmonary function behavior.Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2024
    Article
  8. Lung Hyperinflation as Treatable Trait in Chronic Obstructive Pulmonary Disease: A Narrative Review.International journal of chronic obstructive pulmonary disease · 2024
    Review
  9. FVC/DEuropean journal of medical research · 2023
    Article
  10. Article
  11. Article
  12. Gender-specific differences in COPD symptoms and their impact for the diagnosis of cardiac comorbidities.Clinical research in cardiology : official journal of the German Cardiac Society · 2023
    Article
  13. FVC, but not FEVScientific reports · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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 7 institutions in 1 country.

Peter AlterDept of Medicine, Pulmonary and Critical Care Medicine, Philipps University of Marburg (UMR), member of the German Center for Lung Research (DZL), Marburg, Germany.ORCID https://orcid.org/0000-0002-2115-1743
Jan OrszagInstitute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Comprehensive Pneumology Center Munich (CPC-M), member of the DZL, Munich, Germany.
Christina KellererSchool of Medicine, Institute of General Practice and Health Services Research, Technical University of Munich, Munich, Germany.
Kathrin KahnertDept of Internal Medicine V, University Hospital, LMU Munich, CPC-M, member of the DZL, Munich, Germany.
Tim SpeicherDept of Medicine, Pulmonary and Critical Care Medicine, Philipps University of Marburg (UMR), member of the German Center for Lung Research (DZL), Marburg, Germany.
Henrik WatzPulmonary Research Institute at LungenClinic Grosshansdorf, Airway Research Center North, member of the DZL, Grosshansdorf, Germany.
Robert BalsDept of Internal Medicine V - Pulmonology, Allergology, Intensive Care Medicine, Saarland University Hospital, Homburg, Germany.ORCID https://orcid.org/0000-0002-1472-9535
Tobias WelteClinic for Pneumology, Hannover Medical School, member of the DZL, Hannover, Germany.ORCID https://orcid.org/0000-0002-9947-7356
Claus F VogelmeierDept of Medicine, Pulmonary and Critical Care Medicine, Philipps University of Marburg (UMR), member of the German Center for Lung Research (DZL), Marburg, Germany.
Rudolf A JörresInstitute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Comprehensive Pneumology Center Munich (CPC-M), member of the DZL, Munich, Germany.
Philipps University of Marburg · DELudwig-Maximilians-Universität München · DELMU Klinikum · DELungenClinic Grosshansdorf · DEMedizinische Hochschule Hannover · DESaarland University · DETechnical University of Munich · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAir trapping and lung hyperinflation are major determinants of prognosis and response to therapy in chronic obstructive pulmonary disease (COPD). They are often determined by body plethysmography, which has limited availability, and so the question arises as to what extent they can be estimated

methodsWe used data from visits 1-5 of the COPD cohort COSYCONET. Predictive parameters were derived from visit 1 data, while visit 2-5 data was used to assess reproducibility. Pooled data then yielded prediction models including sex, age, height, and body mass index as covariates. Hyperinflation was defined as ratio of residual volume (RV) to total lung capacity (TLC) above the upper limit of normal. (ClinicalTrials.gov identifier: NCT01245933).

resultsVisit 1 data from 1988 patients (Global Initiative for Chronic Obstructive Lung Disease grades 1-4, n=187, 847, 766, 188, respectively) were available for analysis (n=1231 males, 757 females; mean±sd age 65.1±8.4 years; forced expiratory volume in 1 s (FEV

conclusionsThe degree of air trapping/hyperinflation in terms of RV/TLC can be estimated in a simple manner from forced spirometry, with an accuracy sufficient for inferring the presence of hyperinflation. This may be useful for clinical settings, where body plethysmography is not available.

Identifiers

PMID32743009
PMCPMC7383055
OpenAlexW3044201043

What Socratic holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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 Socratic graph.