Evidence map›Paper›PMID 23710684›Full record

ArticleCritical care (London, England)2013

Susceptibility to ventilator induced lung injury is increased in senescent rats.

Florian Setzer, Karsten Oschatz, Lars Hueter, Barbara Schmidt, Konrad Schwarzkopf, Torsten Schreiber

Open access · goldAbstract readComparative Study
In one paragraph

Article in Critical care (London, England), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 30 citations in OpenAlex.

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  12. Year in review 2013: Critical Care--respirology.Critical care (London, England) · 2014
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Florian Setzer
Karsten Oschatz
Lars Hueter
Barbara Schmidt
Konrad Schwarzkopf
Torsten Schreiber
Jena University Hospital · DEKlinikum Saarbrücken · DEZentralklinik Bad Berka · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe principal mechanisms of ventilator induced lung injury (VILI) have been investigated in numerous animal studies. However, prospective data on the effect of old age on VILI are limited. Under the hypothesis that susceptibility to VILI is increased in old age, we investigated the pulmonary and extrapulmonary effects of mechanical ventilation with high tidal volume (VT) in old compared to young adult animals.

interventionsOld (19.1±3.0 months) and young adult (4.4±1.3 months) male Wistar rats were anesthetized and mechanically ventilated (positive end-expiratory pressure 5 cmH2O, fraction of inspired oxygen 0.4, respiratory rate 40/minute) with a tidal volume (VT) of either 8, 16 or 24 ml/kg for four hours.

resultsCompared to young adult animals, high VT (24 ml/kg body weight) caused more lung injury in old animals as indicated by decreased oxygenation (arterial oxygen tension (PaO2): 208±3 vs. 131±20 mmHg; P<0.05), increased lung wet-to-dry-weight ratio (5.61±0.29 vs. 7.52±0.27; P<0.05), lung lavage protein (206±52 mg/l vs. 1,432±101; P<0.05) and cytokine (IL-6: 856±448 vs. 3,283±943 pg/ml; P<0.05) concentration. In addition, old animals ventilated with high VT had more systemic inflammation than young animals (IL-1β: 149±44 vs. 272±36 pg/ml; P<0.05--young vs. old, respectively).

conclusionsVentilation with unphysiologically large tidal volumes is associated with more lung injury in old compared to young rats. Aggravated pulmonary and systemic inflammation is a key finding in old animals developing VILI.

Indexed as

Age FactorsAgingAnimalsDisease SusceptibilityMalePilot ProjectsRandom AllocationRatsRats, WistarTidal VolumeVentilator-Induced Lung Injury

Identifiers

PMID23710684
PMCPMC4056597
OpenAlexW2155934558

What OpenQuestion holds

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LicenceCC BY
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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.