Evidence map›Paper›PMID 24759765›Full record

ArticlePloS one2014

Early detection of ventilation-induced brain injury using magnetic resonance spectroscopy and diffusion tensor imaging: an in vivo study in preterm lambs.

Béatrice Skiöld, Qizhu Wu, Stuart B Hooper, Peter G Davis, Richard McIntyre, Mary Tolcos, James Pearson, Ruth Vreys, Gary F Egan, Samantha K Barton and 2 more

Abstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

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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

12 authors.

Béatrice SkiöldNeonatal Services, The Royal Women's Hospital, Melbourne, Victoria, Australia.
Qizhu WuMonash Biomedical Imaging, Monash University, Clayton, Victoria, Australia; CSIRO Materials Science and Engineering, Clayton, Victoria, Australia.
Stuart B HooperThe Ritchie Centre, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia; Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia.
Peter G DavisNeonatal Services, The Royal Women's Hospital, Melbourne, Victoria, Australia.
Richard McIntyreMonash Biomedical Imaging, Monash University, Clayton, Victoria, Australia.
Mary TolcosThe Ritchie Centre, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia.
James PearsonMonash Biomedical Imaging, Monash University, Clayton, Victoria, Australia.
Ruth VreysMonash Biomedical Imaging, Monash University, Clayton, Victoria, Australia.
Gary F EganMonash Biomedical Imaging, Monash University, Clayton, Victoria, Australia.
Samantha K BartonThe Ritchie Centre, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia.
Jeanie L Y CheongNeonatal Services, The Royal Women's Hospital, Melbourne, Victoria, Australia; Victorian Infant Brain Studies, Murdoch Childrens Research Institute, Melbourne, Victoria, Australia; Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Victoria, Australia.
Graeme R PolglaseThe Ritchie Centre, Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia; Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimHigh tidal volume (VT) ventilation during resuscitation of preterm lambs results in brain injury evident histologically within hours after birth. We aimed to investigate whether magnetic resonance spectroscopy (MRS) and/or diffusion tensor imaging (DTI) can be used for early in vivo detection of ventilation-induced brain injury in preterm lambs.

methodsNewborn lambs (0.85 gestation) were stabilized with a "protective ventilation" strategy (PROT, n = 7: prophylactic Curosurf, sustained inflation, VT 7 mL/kg, positive end expiratory pressure (PEEP) 5 cmH2O) or an initial 15 minutes of "injurious ventilation" (INJ, n = 10: VT 12 mL/kg, no PEEP, late Curosurf) followed by PROT ventilation for the remainder of the experiment. At 1 hour, lambs underwent structural magnetic resonance imaging (Siemens, 3 Tesla). For measures of mean/axial/radial diffusivity (MD, AD, RD) and fractional anisotropy (FA), 30 direction DTI was performed. Regions of interests encompassed the thalamus, internal capsule, periventricular white matter and the cerebellar vermis. MRS was performed using a localized single-voxel (15×15×20 mm3, echo time 270 ms) encompassing suptratentorial deep nuclear grey matter and central white matter. Peak-area ratios for lactate (Lac) relative to N-acetylaspartate (NAA), choline (Cho) and creatine (Cr) were calculated. Groups were compared using 2-way RM-ANOVA, Mann-Whitney U-test and Spearman's correlations.

resultsNo cerebral injury was seen on structural MR images. Lambs in the INJ group had higher mean FA and lower mean RD in the thalamus compared to PROT lambs, but not in the other regions of interest. Peak-area lactate ratios >1.0 was only seen in INJ lambs. A trend of higher mean peak-area ratios for Lac/Cr and Lac/Cho was seen, which correlated with lower pH in both groups.

conclusionAcute changes in brain diffusion measures and metabolite peak-area ratios were observed after injurious ventilation. Early MRS/DTI is able to detect the initiation of ventilation-induced brain injury.

Indexed as

AnimalsAnimals, NewbornBrain InjuriesDiffusion Tensor ImagingMagnetic Resonance ImagingRespiration, ArtificialSheep, Domestic

Identifiers

PMID24759765
PMCPMC3997476

What OpenQuestion holds

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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.