Evidence map›Paper›PMID 33122902›Full record

ArticleInternational journal of chronic obstructive pulmonary disease2020

Factors Associated with Exercise-Induced Desaturation in Patients with Chronic Obstructive Pulmonary Disease.

Chiung-Hsin Chang, Horng-Chyuan Lin, Chia-Hung Yang, Shu-Ting Gan, Chi-Hsien Huang, Fu-Tsai Chung, Han-Chung Hu, Shu-Min Lin, Chih-Hao Chang

Open access · goldAbstract read
In one paragraph

Article in International journal of chronic obstructive pulmonary disease, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 15% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 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

9 authors at 4 institutions in 1 country.

Chiung-Hsin ChangDepartment of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.ORCID 0000-0003-2495-6464
Horng-Chyuan LinDepartment of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
Chia-Hung YangDivision of Cardiology, Department of Internal Medicine, New Taipei Municipal Tucheng Hospital, New Taipei City, Taiwan.
Shu-Ting GanCenter for Big Data Analytics and Statistics, Chang Gung Memorial Hospital, Taoyuan, Taiwan.ORCID 0000-0002-1592-0470
Chi-Hsien HuangDepartment of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
Fu-Tsai ChungDepartment of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
Han-Chung HuDepartment of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
Shu-Min LinDepartment of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
Chih-Hao ChangDepartment of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.ORCID 0000-0001-9573-969X
Chang Gung University · TWChang Gung Memorial Hospital · TWLinkou Chang Gung Memorial Hospital · TWTaipei City Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: The 6-min walk test (6MWT) is a useful tool to assess the physiologic function in patients with chronic obstructive pulmonary disease (COPD). The recent study showed that patients with COPD with oxygen desaturation during the 6MWT had an increased risk of exacerbation and death compared with those without oxygen desaturation. This study aimed to explore the potential risk factors for exercise-induced desaturation (EID) in patients with COPD. Patients and Methods: Adult patients with COPD were enrolled from the Chang Gung Research Database between January 2013 and January 2017. Age, sex, body mass index, underlying diseases, medications, and results of the pulmonary function tests and 6MWT were retrospectively collected and analyzed. Results: Among 1768 patients with COPD, 932 (52.7%) had oxygen desaturation, and the other 836 (47.3%) had no desaturation during the 6MWT. The patients with EID had a shorter 6-min walk distance than those without desaturation (352.08±120.29 vs 426.56±112.56, p<0.0001). In the multivariate logistic regression analysis, older age, female sex, lower forced expiratory volume in 1 s, and comorbidity with atrial fibrillation (AF) were associated with oxygen desaturation during the 6MWT. Patients with EID had higher exacerbation frequency than those without desaturation in the 1-year follow-up period (0.59±1.50 vs 0.34±1.26, p<0.0001). Patients with COPD with AF also had a higher rate of exacerbation requiring emergency department visit or hospitalization in the 1-year follow-up. Conclusion: This study demonstrates that older age, low FEV1, and female sex are risk factors for EID. Desaturation during 6MWT is related to frequent acute exacerbation of COPD in the 1-year follow-up.

Indexed as

Pulmonary Disease, Chronic ObstructiveAdultAgedExercise TestExercise ToleranceFemaleForced Expiratory VolumeHumansOxygenRetrospective StudiesVital CapacityWalkingOxygen6-minute walk testA-fibexacerbationhypoxia

Identifiers

PMID33122902
PMCPMC7591268
OpenAlexW3094548291

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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.