Evidence map›Paper›PMID 21455750›Full record

ArticleIntensive care medicine2011

Optimisation of positive end-expiratory pressure by forced oscillation technique in a lavage model of acute lung injury.

Raffaele L Dellacà, Emanuela Zannin, Peter Kostic, Marie Andersson Olerud, Pasquale P Pompilio, Goran Hedenstierna, Antonio Pedotti, Peter Frykholm

Registry-linked trialAbstract read
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In one paragraph

Article in Intensive care medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01506284 (Assessment of Airways Mechanical Properties by Forced Oscillatory Technique), which is not on this map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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.

NCT01506284 completednot on this map

Assessment of Airways Mechanical Properties by Forced Oscillatory Technique (FOT) and Laser Interferometry (LIR) During Anesthesia.

TypeobservationalSponsorUppsala University HospitalRan2011 to 2012Enrolled14ConditionsAnesthesiaArmsForced oscillatory technique (FOT) and laser interferometry (LIR).
3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Trial
  2. Observational
  3. Clinical significance and applications of oscillometry.European respiratory review : an official journal of the European Respiratory Society · 2022
    Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Year in review 2012: Critical Care--Respirology.Critical care (London, England) · 2013
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Raffaele L DellacàDipartimento di Bioingegneria, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy. raffaele.dellaca@polimi.it
Emanuela Zannin
Peter Kostic
Marie Andersson Olerud
Pasquale P Pompilio
Goran Hedenstierna
Antonio Pedotti
Peter Frykholm

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe evaluated whether oscillatory compliance (C(X5)) measured by forced oscillation technique (FOT) at 5 Hz may be useful for positive end-expiratory pressure (PEEP) optimisation.

methodsWe studied seven pigs in which lung injury was induced by broncho-alveolar lavage. The animals were ventilated in volume control mode with a tidal volume of 6 ml/kg. Forced oscillations were superimposed on the ventilation waveform for the assessment of respiratory mechanics. PEEP was increased from 0 to 24 cmH(2)O in steps of 4 cmH(2)O and subsequently decreased from 24 to 0 in steps of 2 cmH(2)O. At each 8-min step, a CT scan was acquired during an end-expiratory hold, and blood gas analysis was performed. C(X5) was monitored continuously, and data relative to the expiratory hold were selected and averaged for comparison with CT and oxygenation.

resultsOpen lung PEEP (PEEP(ol)) was defined as the level of PEEP corresponding to the maximum value of C(X5) on the decremental limb of the PEEP trial. PEEP(ol) was on average 13.4 (± 1.0) cmH(2)O. For higher levels of PEEP, there were no significant changes in the amount of non-aerated tissue (V(tissNA)%). In contrast, when PEEP was reduced below PEEP(ol), V(tissNA)% dramatically increased. PEEP(ol) was able to prevent a 5% drop in V(tissNA)% with 100% sensitivity and 92% specificity. At PEEP(ol) V(tissNA)% was significantly lower than at the corresponding PEEP level on the incremental limb.

conclusionsThe assessment of C(X5) allowed the definition of PEEP(ol) to be in agreement with CT data. Thus, FOT measurements of C(X5) may provide a non-invasive bedside tool for PEEP titration.

Indexed as

Bronchoalveolar LavageChest Wall OscillationAcute Lung InjuryAnimalsLung ComplianceModels, AnimalOxygen ConsumptionPositive-Pressure RespirationRespiratory MechanicsSwineTomography, X-Ray Computed

Identifiers

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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.