Evidence map›Paper›PMID 27578971›Full record

ArticleInternational journal of chronic obstructive pulmonary disease2016

Small pulmonary vascular alteration and acute exacerbations of COPD: quantitative computed tomography analysis.

Zhiyue Wang, Xuesong Chen, Kouying Liu, Weiping Xie, Hong Wang, Yongyue Wei, Lijun Tang, Yinsu Zhu

Abstract readComparative Study
In one paragraph

Article in International journal of chronic obstructive pulmonary disease, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Guideline
  2. Quantitative computed tomography and predictive modelling for COPD exacerbations.European respiratory review : an official journal of the European Respiratory Society · 2025
    Pooled it
  3. Thoracic Imaging at Exacerbation of Chronic Obstructive Pulmonary Disease: A Systematic Review.International journal of chronic obstructive pulmonary disease · 2020
    Pooled it
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. 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

8 authors.

Zhiyue WangDepartment of Radiology.
Xuesong ChenDepartment of Respiratory, The First Affiliated Hospital of Nanjing Medical University.
Kouying LiuDepartment of Respiratory, The First Affiliated Hospital of Nanjing Medical University.
Weiping XieDepartment of Respiratory, The First Affiliated Hospital of Nanjing Medical University.
Hong WangDepartment of Respiratory, The First Affiliated Hospital of Nanjing Medical University.
Yongyue WeiDepartment of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, People's Republic of China.
Lijun TangDepartment of Radiology.
Yinsu ZhuDepartment of Radiology.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The morphologic alterations of pulmonary small vessels measured by computed tomography (CT) have been used to evaluate chronic obstructive pulmonary disease (COPD). However, the relationship between small pulmonary vascular alteration and acute exacerbations of COPD (AECOPD) is not well understood. The aim of this study was to evaluate the cross-sectional area (CSA) of small pulmonary vessel alterations measured on CT images and investigate its relationship with the COPD severity staged by the degree of airflow limitation and the occurrence of AECOPD. We retrospectively reviewed CT scans, clinical characteristics, and pulmonary function test results of 153 patients with COPD. All the patients were divided into AECOPD and non-AECOPD group according to the COPD staging and pulmonary function test results. The percentages of the total CSA less than 5 mm(2) and equal to 5-10 mm(2) over the lung area (%CSA<5 and %CSA5-10, respectively) were measured. The %CSA<5 steadily decreased in relation to the increase of COPD severity. In addition, %CSA<5 of the AECOPD group was significantly lower than that of the non-AECOPD group (0.41±0.13 versus 0.68±0.18, P<0.001), and the optimal cutoff value was 0.56 (sensitivity, 0.863; specificity, 0.731). Therefore, small pulmonary vascular alteration, as measured by %CSA<5, could indicate not only the degree of COPD severity, but also the occurrence of AECOPD.

Indexed as

Computed Tomography AngiographyMultidetector Computed TomographyAgedArea Under CurveDisease ProgressionFemaleForced Expiratory VolumeHumansLungMaleMiddle AgedPredictive Value of TestsPulmonary ArteryPulmonary Disease, Chronic ObstructiveRetrospective StudiesROC Curveacute exacerbation of chronic obstructive pulmonary diseasecomputed tomographycross-sectional area of small pulmonary vessels

Identifiers

PMID27578971
PMCPMC5001673

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Registered trials

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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.