Evidence map›Paper›PMID 30842573›Full record

ArticleScientific reports2019

Resting hyperinflation and emphysema on the clinical course of COPD.

Yeon Wook Kim, Chang-Hoon Lee, Hun-Gyu Hwang, Yu-Il Kim, Deog Kyeom Kim, Yeon-Mok Oh, Sang Haak Lee, Ki Uk Kim, Sang-Do Lee

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 12% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Review
  4. Review
  5. Article
  6. Lung Hyperinflation as Treatable Trait in Chronic Obstructive Pulmonary Disease: A Narrative Review.International journal of chronic obstructive pulmonary disease · 2024
    Review
  7. Review
  8. Article
  9. COPD Risk Factor Profiles in General Population and Referred Patients: Potential Etiotypes.International journal of chronic obstructive pulmonary disease · 2023
    Observational
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Treatable Traits in COPD - A Proposed Approach.International journal of chronic obstructive pulmonary disease
    Review
  18. Article
  19. Observational
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

9 authors at 5 institutions in 1 country.

Yeon Wook KimDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
Chang-Hoon LeeDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea. kauri670@empal.com.ORCID 0000-0001-9960-1524
Hun-Gyu HwangDepartment of Medicine, Soonchunhyang University Gumi's Hospital, North Kyungsang Province, Republic of Korea.
Yu-Il KimDepartment of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea.
Deog Kyeom KimDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Republic of Korea.
Yeon-Mok OhDepartment of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
Sang Haak LeeDepartment of Internal Medicine, The Catholic University of Korea, St. Paul's Hospital, Seoul, Republic of Korea.
Ki Uk KimDepartment of Internal Medicine, Pusan National University School of Medicine, Busan, Republic of Korea.
Sang-Do LeeDepartment of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
Seoul National University Hospital · KRUlsan College · KRPusan National University · KRSeoul National University · KRSoonchunhyang University Hospital Seoul · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study is to clarify whether the combined evaluation of resting hyperinflation and emphysema confers any additional advantages in terms of predicting clinical outcomes in chronic obstructive pulmonary disease (COPD) patients. We included COPD patients from the Korean Obstructive Lung Disease (KOLD) cohort. Patients with a residual volume/total lung capacity (RV/TLC) over the upper limit of normal were defined as having resting hyperinflation, and those with an emphysema index >10% were defined as having emphysema. We investigated the impacts of resting hyperinflation and emphysema on exacerbations and mortality. A total of 310 COPD patients were analyzed over a mean of 61.1 months. After adjustment for covariates, resting hyperinflation was an independent predictor of earlier exacerbation (HR = 1.66, CI = 1.24-2.22), more frequent exacerbation (IRR = 1.35, CI = 1.01-1.81), and higher mortality (HR = 2.45, CI = 1.16-5.17) risk. Emphysema was also significantly associated with earlier exacerbation (HR = 1.64, CI = 1.15-2.35), and higher mortality (HR = 3.13, CI = 1.06-9.27) risk. Participants with both resting hyperinflation and emphysema had an additively higher risk of earlier exacerbations (HR = 1.71, 95% CI = 1.26-2.33) and mortality (HR = 3.75, 95% CI = 1.81-7.73) compared with those in other groups. In conclusion, resting hyperinflation and emphysema had additional worse impacts on exacerbations and mortality in COPD patients.

Indexed as

AgedFemaleHumansLongitudinal StudiesMaleMiddle AgedMultidetector Computed TomographyPrognosisProspective StudiesPulmonary Disease, Chronic ObstructivePulmonary EmphysemaRepublic of KoreaRespiratory Function TestsRest

Identifiers

PMID30842573
PMCPMC6403229
OpenAlexW2920481918

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.