Evidence map›Paper›PMID 23385096›Full record

ArticleCritical care medicine2013

Lung stress and strain during mechanical ventilation: any difference between statics and dynamics?

Alessandro Protti, Davide T Andreis, Massimo Monti, Alessandro Santini, Cristina C Sparacino, Thomas Langer, Emiliano Votta, Stefano Gatti, Luciano Lombardi, Orazio Leopardi and 3 more

2 registry-linked trialsAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Critical care medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 151 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
151citing papers in PubMed, 2 pooled it
–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.

NCT04157946 completednot on this mapstarted 2017, after this paper: background citation

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
NCT05859906 unknown statusnot on this mapstarted 2023, after this paper: background citation

Evaluation of the Effect of Two Different Intra-abdominal Pressure Applications on "Mechanical Power" in Cases Undergoing Laparoscopic Cholecystectomy

Typeobservational_patient_registrySponsorAyse UlgeyRan2023 to 2023Enrolled200ConditionsVentilator-induced Lung InjuryArmsmechanical power measurement
3 · Its place in the literature

Who cites it

151 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Trial
  9. Trial
  10. Trial
  11. Trial
  12. Trial
  13. Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Review
  19. Review
  20. Article

91 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors.

Alessandro ProttiDipartimento di Anestesiologia, Terapia Intensiva e Scienze Dermatologiche, Università degli Studi di Milano, Centro di Ricerche Chirurgiche Precliniche, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan Italy. alessandro.protti@policlinico.mi.it
Davide T Andreis
Massimo Monti
Alessandro Santini
Cristina C Sparacino
Thomas Langer
Emiliano Votta
Stefano Gatti
Luciano Lombardi
Orazio Leopardi
Serge Masson
Massimo Cressoni
Luciano Gattinoni

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTidal volume (VT) and volume of gas caused by positive end-expiratory pressure (VPEEP) generate dynamic and static lung strains, respectively. Our aim was to clarify whether different combinations of dynamic and static strains, resulting in the same large global strain, constantly produce lung edema.

designLaboratory investigation.

settingAnimal unit. SUBJECTS: Twenty-eight healthy pigs.

interventionsAfter lung computed tomography, 20 animals were ventilated for 54 hours at a global strain of 2.5, either entirely dynamic (VT 100% and VPEEP 0%), partly dynamic and partly static (VT 75-50% and VPEEP 25-50%), or mainly static (VT 25% and VPEEP 75%) and then killed. In eight other pigs (VT 25% and VPEEP 75%), VPEEP was abruptly zeroed after 36-54 hours and ventilation continued for 3 hours. MEASUREMENTS AND MAIN

resultsEdema was diagnosed when final lung weight (balance) exceeded the initial weight (computed tomography). Mortality, lung mechanics, gas exchange, pulmonary histology, and inflammation were evaluated. All animals ventilated with entirely dynamic strain (VT 825±424 mL) developed pulmonary edema (lung weight from 334±38 to 658±99 g, p<0.01), whereas none of those ventilated with mainly static strain (VT 237±21 mL and VPEEP 906±114 mL, corresponding to 19±1 cm H2O of positive end-expiratory pressure) did (from 314±55 to 277±46 g, p=0.65). Animals ventilated with intermediate combinations finally had normal or largely increased lung weight. Smaller dynamic and larger static strains lowered mortality (p<0.01), derangement of lung mechanics (p<0.01), and arterial oxygenation (p<0.01), histological injury score (p=0.03), and bronchoalveolar interleukin-6 concentration (p<0.01). Removal of positive end-expiratory pressure did not result in abrupt increase in lung weight (from 336±36 to 351±77 g, p=0.51).

conclusionsLung edema forms (possibly as an all-or-none response) depending not only on global strain but also on its components. Large static are less harmful than large dynamic strains, but not because the former merely counteracts fluid extravasation.

Indexed as

Disease Models, AnimalAcute Lung InjuryAnimalsHemodynamicsPulmonary EdemaPulmonary Gas ExchangeRadiographyRespiration, ArtificialRespiratory MechanicsStress, PhysiologicalSwineTidal Volume

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.