Evidence map›Paper›PMID 29528946›Full record

ArticleCritical care medicine2018

Does Regional Lung Strain Correlate With Regional Inflammation in Acute Respiratory Distress Syndrome During Nonprotective Ventilation? An Experimental Porcine Study.

Jaime Retamal, Daniel Hurtado, Nicolás Villarroel, Alejandro Bruhn, Guillermo Bugedo, Marcelo Britto Passos Amato, Eduardo Leite Vieira Costa, Göran Hedenstierna, Anders Larsson, João Batista Borges

Registry-linked trialOpen access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Critical care medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04157946 (Risk Assessment of Ventilator-induced Lung Injury in Patients With Acute Respiratory Distress Syndrome), which is not on this map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
4.2field-weighted citation impact, top 5% 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.

NCT04157946 completednot on this map

Risk Assessment of Ventilator-induced Lung Injury in Patients With Acute Respiratory Distress Syndrome: The Role of Morphological Phenotype in ARDS

TypeobservationalSponsorHospital El CruceRan2017 to 2019Enrolled12ConditionsRespiratory Distress Syndrome, AdultArmsCT
3 · Its place in the literature

Who cites it

40 citing papers in PubMed, 61 citations in OpenAlex.

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  14. Polymer Lung Surfactants Attenuate Direct Lung Injury in Mice.ACS biomaterials science & engineering · 2023
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 3 countries.

Jaime RetamalHedenstierna Laboratory, Department of Surgical Sciences, Section of Anaesthesiology and Critical Care, Uppsala University, Uppsala, Sweden.
Daniel HurtadoDepartment of Structural and Geotechnical Engineering and Biomedical Engineering Group, Pontificia Universidad Católica de Chile, Santiago, Chile.
Nicolás VillarroelDepartment of Structural and Geotechnical Engineering and Biomedical Engineering Group, Pontificia Universidad Católica de Chile, Santiago, Chile.
Alejandro BruhnDepartamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
Guillermo BugedoDepartamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
Marcelo Britto Passos AmatoPulmonary Division, Heart Institute (InCor), Hospital das Clinicas, University of São Paulo, São Paulo, Brazil.
Eduardo Leite Vieira CostaPulmonary Division, Heart Institute (InCor), Hospital das Clinicas, University of São Paulo, São Paulo, Brazil.
Göran HedenstiernaHedenstierna Laboratory, Department of Medical Sciences, Clinical Physiology, Uppsala University, Uppsala, Sweden.
Anders LarssonHedenstierna Laboratory, Department of Surgical Sciences, Section of Anaesthesiology and Critical Care, Uppsala University, Uppsala, Sweden.
João Batista BorgesHedenstierna Laboratory, Department of Surgical Sciences, Section of Anaesthesiology and Critical Care, Uppsala University, Uppsala, Sweden.
Pontificia Universidad Católica de Chile · CLHospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIt is known that ventilator-induced lung injury causes increased pulmonary inflammation. It has been suggested that one of the underlying mechanisms may be strain. The aim of this study was to investigate whether lung regional strain correlates with regional inflammation in a porcine model of acute respiratory distress syndrome.

designRetrospective analysis of CT images and positron emission tomography images using [F]fluoro-2-deoxy-D-glucose.

settingUniversity animal research laboratory. SUBJECTS: Seven piglets subjected to experimental acute respiratory distress syndrome and five ventilated controls.

interventionsAcute respiratory distress syndrome was induced by repeated lung lavages, followed by 210 minutes of injurious mechanical ventilation using low positive end-expiratory pressures (mean, 4 cm H2O) and high inspiratory pressures (mean plateau pressure, 45 cm H2O). All animals were subsequently studied with CT scans acquired at end-expiration and end-inspiration, to obtain maps of volumetric strain (inspiratory volume - expiratory volume)/expiratory volume, and dynamic positron emission tomography imaging. Strain maps and positron emission tomography images were divided into 10 isogravitational horizontal regions-of-interest, from which spatial correlation was calculated for each animal. MEASUREMENTS AND MAIN

resultsThe acute respiratory distress syndrome model resulted in a decrease in respiratory system compliance (20.3 ± 3.4 to 14.0 ± 4.9 mL/cm H2O; p < 0.05) and oxygenation (PaO2/FIO2, 489 ± 80 to 92 ± 59; p < 0.05), whereas the control animals did not exhibit changes. In the acute respiratory distress syndrome group, strain maps showed a heterogeneous distribution with a greater concentration in the intermediate gravitational regions, which was similar to the distribution of [F]fluoro-2-deoxy-D-glucose uptake observed in the positron emission tomography images, resulting in a positive spatial correlation between both variables (median R = 0.71 [0.02-0.84]; p < 0.05 in five of seven animals), which was not observed in the control animals.

conclusionIn this porcine acute respiratory distress syndrome model, regional lung strain was spatially correlated with regional inflammation, supporting that strain is a relevant and prominent determinant of ventilator-induced lung injury.

Indexed as

AnimalsDisease Models, AnimalInflammationLungPositron-Emission TomographyRespiration, ArtificialRespiratory Distress SyndromeSwineTomography, X-Ray ComputedVentilator-Induced Lung Injury

Identifiers

PMID29528946
OpenAlexW2791296416

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Registered trials

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.