Evidence map›Paper›PMID 29713160›Full record

Observational studyInternational journal of chronic obstructive pulmonary disease

Static and dynamic hyperinflation during severe acute exacerbations of chronic obstructive pulmonary disease.

Wouter H van Geffen, Huib Am Kerstjens

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in International journal of chronic obstructive pulmonary disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
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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

2 authors at 1 institution in 2 countries.

Wouter H van GeffenDepartment of Respiratory Medicine, Medical Centre Leeuwarden, Leeuwarden, the Netherlands.
Huib Am KerstjensDepartment of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
University Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStatic hyperinflation is known to be increased during moderate acute exacerbations of chronic obstructive pulmonary disease (COPD) (AECOPD), but few data exist in patients with severe exacerbations of COPD. The role of dynamic hyperinflation during exacerbations is unclear.

methodsIn a prospective, observational cohort study, we recruited patients admitted to hospital for AECOPD. The following measurements were performed upon admission and again after resolution (stable state) at least 42 days later: inspiratory capacity (IC), body plethysmography, dynamic hyperinflation by metronome-paced IC measurement, health-related quality of life and dyspnea.

resultsForty COPD patients were included of whom 28 attended follow-up. The IC was low at admission (2.05±0.11 L) and increased again during resolution by 15.6%±23.1% or 0.28±0.08 L (mean ± standard error of the mean,

conclusionStatic hyperinflation is increased during severe AECOPD requiring hospitalization compared with stable state. We could measure metronome-paced dynamic hyperinflation during severe AECOPD but found no increase.

Indexed as

AgedDisease ProgressionDyspneaFemaleForced Expiratory VolumeHumansInspiratory CapacityLungMaleMiddle AgedPatient AdmissionPlethysmography, Whole BodyProspective StudiesPulmonary Disease, Chronic ObstructiveQuality of LifeRecovery of Functionchronic obstructive pulmonary diseaseCOPDCOPD exacerbationdynamic hyperinflationexacerbations of COPDsevere acute exacerbations of COPDstatic hyperinflation

Identifiers

PMID29713160
PMCPMC5912369
OpenAlexW2799990319

What OpenQuestion holds

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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.