Evidence map›Paper›PMID 33823923›Full record

SynthesisArthritis research & therapy2021

Effect of combined pulmonary fibrosis and emphysema on patients with connective tissue diseases and systemic sclerosis: a systematic review and meta-analysis.

Bon San Koo, Kyu Yong Park, Hyun Jung Lee, Hyun Jung Kim, Hyeong Sik Ahn, Shin-Young Yim, Jae-Bum Jun

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Arthritis research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

10 citing papers in PubMed, 15 citations in OpenAlex.

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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

7 authors at 5 institutions in 1 country.

Bon San Koo *Department of Internal Medicine, Inje University Seoul Paik Hospital, Inje University College of Medicine, Seoul, South Korea.
Kyu Yong Park *Department of Physical Medicine and Rehabilitation, Ajou University School of Medicine, Suwon, South Korea.
Hyun Jung LeeDepartment of Physical Medicine and Rehabilitation, Jeju National University Hospital, Jeju, South Korea.
Hyun Jung KimDepartment of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea.
Hyeong Sik AhnDepartment of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea.
Shin-Young YimDepartment of Physical Medicine and Rehabilitation, Ajou University School of Medicine, Suwon, South Korea. syyim@ajou.ac.kr.
Jae-Bum JunDepartment of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea. junjb@hanyang.ac.kr.ORCID 0000-0002-0208-0505
Ajou University · KRKorea University · KRHanyang University Seoul Hospital · KRInje University Seoul Paik Hospital · KRJeju National University Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study aimed to analyze the literature systematically to determine the clinical characteristics and prognosis of patients with connective tissue disease (CTD) with combined pulmonary fibrosis and emphysema (CPFE) compared to those of patients with CTD-interstitial lung disease (CTD-ILD) without emphysema.

methodsWe searched MEDLINE, EMBASE, Cochrane Library, and KoreaMed for relevant articles published before July 2019. Studies meeting all the following criteria were included: (1) original research studies evaluating the effect of CPFE on CTD, (2) studies that compared patients with CTD-CPFE to those with CTD-ILD without emphysema, and (3) studies providing data on physical capacity, pulmonary function, or death in patients with CTD. Clinical characteristics of patients with CTD-CPFE were compared with those of patients with CTD-ILD without emphysema, and the influence of CPFE on physical capacity, pulmonary function, and death was analyzed.

resultsSix studies between 2013 and 2019 were included. Two hundred ninety-nine (29.5%) and 715 (70.5%) patients had CTD-CPFE and CTD-ILD without emphysema, respectively. Regarding the type of CTD, 711 (68.3%) patients had systemic sclerosis, 263 (25.3%) rheumatoid arthritis, and 67 (6.4%) other CTDs. Patients with CTD-CPFE had a higher frequency of pulmonary hypertension and pulmonary fibrosis > 20% of the total lung volume, higher ratio of the forced vital capacity to the diffusion capacity of the lung for carbon monoxide (DLCO), lower arterial oxygen pressure at rest, and lower DLCO compared to those in patients with CTD-ILD without emphysema. In addition, more deaths occurred among those with CTD-CPFE (odds ratio, 2.95; 95% confidence interval, 1.75-4.96).

conclusionCTD-CPFE is associated with worse physical and pulmonary function and more deaths compared to those in CTD-ILD without emphysema. These findings indicate the need for increased awareness and close monitoring of patients with CTD-CPFE.

Indexed as

Connective Tissue DiseasesEmphysemaPulmonary EmphysemaPulmonary FibrosisScleroderma, SystemicHumansRetrospective StudiesConnective tissue diseasesEmphysemaInterstitial lung diseasesMeta-analysisPulmonary fibrosisSystematic review

Identifiers

PMID33823923
PMCPMC8022385
OpenAlexW3152255132

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.