Evidence map›Paper›PMID 40050037›Full record

ArticleBMJ open respiratory research2025

Assessment of the right ventricular strain, left ventricular strain and left atrial strain using speckle tracking echocardiography in patients with chronic obstructive pulmonary disease.

Hai Nguyen Ngoc Dang, Thang Viet Luong, Nhi Thi Y Nguyen, Hung Khanh Tran, Hieu Thi Nguyen Tran, Hung Minh Vu, Thanh Van Ho, Ngoc Thi Minh Vo, Thanh Thien Tran, Toan Song Do and 5 more

Abstract read
In one paragraph

Article in BMJ open respiratory research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–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

7 citing papers in PubMed.

  1. Diagnostic Tests for Stage B Heart Failure.Current cardiology reports · 2026
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  6. Observational
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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

15 authors.

Hai Nguyen Ngoc Dang *Faculty of Medicine, Duy Tan University, Da Nang, Vietnam.ORCID http://orcid.org/0009-0006-4512-4658
Thang Viet Luong *University of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0009-0008-5109-9115
Nhi Thi Y NguyenUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.
Hung Khanh TranUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0009-0006-1177-4580
Hieu Thi Nguyen TranUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.
Hung Minh VuUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0009-0006-6461-9349
Thanh Van HoUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0009-0000-6320-4236
Ngoc Thi Minh VoUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0009-0009-9491-9176
Thanh Thien TranUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0009-0003-5204-4785
Toan Song DoUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0009-0007-4543-5410
Van Thi Thuy PhanUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.
Tien Anh HoangUniversity of Medicine and Pharmacy, Hue University, Hue, Vietnam.ORCID http://orcid.org/0000-0002-7406-9604
Phuoc Le HuuFamily Hospital, Da Nang, Vietnam.ORCID http://orcid.org/0009-0000-7049-3515
Binh Anh HoCardiovascular Center, Hue Central Hospital, Hue, Vietnam hoanhbinhbshue@gmail.com.ORCID http://orcid.org/0000-0001-8296-2235
Hung Minh NguyenVietnam National Heart Institute, Bach Mai Hospital, Ha Noi, Vietnam.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesCardiovascular disease is a prevalent comorbidity and leading cause of mortality in chronic obstructive pulmonary disease (COPD) patients. Early identification of cardiac abnormalities in COPD patients is crucial. Speckle tracking echocardiography (STE) is practical for assessing ventricular and atrial function, but its role in COPD patients is under-researched. This study aimed to examine right ventricular (RV), left ventricular (LV) and left atrial (LA) strain in COPD patients via STE.

methodsA cross-sectional study was conducted with two groups: COPD patients diagnosed per the 2017 Global Initiative for Chronic Obstructive Lung Disease criteria and healthy controls. All the participants underwent STE to evaluate the RV, LV, and LA strains.

resultsRV strain indices (RV free wall longitudinal strain (RVFWSL) and RV 4-chamber longitudinal strain (RV4CSL)) were significantly lower in the COPD group (16.53±5.89% and 14.65±4.53%, respectively) than in the control group (21.39±7.78% and 18.34±6.38%, respectively) (p<0.001). LV global longitudinal strain was also lower in the COPD group (18.45% (17.16-19.51)) than in the control group (19.50% (18.63-21.46), p=0.018). No significant differences were found in LA strain indices (LA reservoir strain, LA conduit strain or LA contractile strain) between the two groups. Furthermore, RVFWSL and RV4CSL were significantly greater in the group with a modified Medical Research Council score <2 (p<0.05).

conclusionCompared with healthy controls, COPD patients presented reduced RV and LV strain, with no significant differences in LA strain indices.

Indexed as

EchocardiographyHeart VentriclesPulmonary Disease, Chronic ObstructiveVentricular Dysfunction, LeftVentricular Dysfunction, RightAgedCase-Control StudiesCross-Sectional StudiesFemaleHeart AtriaHumansMaleMiddle AgedCOPD PathologyPulmonary Disease, Chronic Obstructive

Identifiers

PMID40050037
PMCPMC11887318

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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.