Evidence map›Paper›PMID 27188767›Full record

ArticleExperimental gerontology2016

Conservative fluid management prevents age-associated ventilator induced mortality.

Joseph A Herbert, Michael S Valentine, Nivi Saravanan, Matthew B Schneck, Ramana Pidaparti, Alpha A Fowler, Angela M Reynolds, Rebecca L Heise

Open access · greenAbstract readComparative Study
In one paragraph

Article in Experimental gerontology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

16 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Review
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  8. Review
  9. Article
  10. Acute Respiratory Distress Syndrome in the Elderly.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2021
    Article
  11. Review
  12. Hemodynamic characteristics and early warnings in very old patients.American journal of translational research · 2021
    Review
  13. Excipient Enhanced Growth Aerosol Surfactant Replacement Therapy in anJournal of aerosol medicine and pulmonary drug delivery · 2020
    Article
  14. Review
  15. Article
  16. Article
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

8 authors at 2 institutions in 1 country.

Joseph A HerbertDepartment of Biomedical Engineering, Virginia Commonwealth University, 401 W Main St, PO Box 843067, Richmond, VA 23284, United States.
Michael S ValentineDepartment of Biomedical Engineering, Virginia Commonwealth University, 401 W Main St, PO Box 843067, Richmond, VA 23284, United States.
Nivi SaravananDepartment of Biomedical Engineering, Virginia Commonwealth University, 401 W Main St, PO Box 843067, Richmond, VA 23284, United States.
Matthew B SchneckDepartment of Biomedical Engineering, Virginia Commonwealth University, 401 W Main St, PO Box 843067, Richmond, VA 23284, United States.
Ramana PidapartiSchool of Engineering, University of Georgia, United States.
Alpha A FowlerDivision of Pulmonary Disease and Critical Care Medicine, Department of Internal Medicine, Virginia Commonwealth University School of Medicine, United States.
Angela M ReynoldsDepartment of Mathematics and Applies Mathematics 1015 Floyd Avenue P.O. Box 842014 Richmond, VA 23284-2014, United States.
Rebecca L HeiseDepartment of Biomedical Engineering, Virginia Commonwealth University, 401 W Main St, PO Box 843067, Richmond, VA 23284, United States; Department of Physiology and Biophysics VCU School of Medicine 1101 East Marshall Street P.O. Box 980551 Richmond, VA 23298-0551, United States. Electronic address: rlheise@vcu.edu.
Virginia Commonwealth University · USUniversity of Georgia · US

Funding

Age Dependent Mechanical Ventilator-Induced Inflammation: Modeling & ExperimentsR01AG041823 · NIA · VIRGINIA COMMONWEALTH UNIVERSITY · PI HEISE, REBECCA LONG, REYNOLDS, ANGELA MARIE · 2012 to 2015
$1.2M
NIA NIH HHS R01 AG041823
6 · The paper itself

Abstract

backgroundApproximately 800 thousand patients require mechanical ventilation in the United States annually with an in-hospital mortality rate of over 30%. The majority of patients requiring mechanical ventilation are over the age of 65 and advanced age is known to increase the severity of ventilator-induced lung injury (VILI) and in-hospital mortality rates. However, the mechanisms which predispose aging ventilator patients to increased mortality rates are not fully understood. Ventilation with conservative fluid management decreases mortality rates in acute respiratory distress patients, but to date there has been no investigation of the effect of conservative fluid management on VILI and ventilator associated mortality rates. We hypothesized that age-associated increases in susceptibility and incidence of pulmonary edema strongly promote age-related increases in ventilator associated mortality.

methods2month old and 20month old male C57BL6 mice were mechanically ventilated with either high tidal volume (HVT) or low tidal volume (LVT) for up to 4h with either liberal or conservative fluid support. During ventilation, lung compliance, total lung capacity, and hysteresis curves were quantified. Following ventilation, bronchoalveolar lavage fluid was analyzed for total protein content and inflammatory cell infiltration. Wet to dry ratios were used to directly measure edema in excised lungs. Lung histology was performed to quantify alveolar barrier damage/destruction. Age matched non-ventilated mice were used as controls.

resultsAt 4h, both advanced age and HVT ventilation significantly increased markers of inflammation and injury, degraded pulmonary mechanics, and decreased survival rates. Conservative fluid support significantly diminished pulmonary edema and improved pulmonary mechanics by 1h in advanced age HVT subjects. In 4h ventilations, conservative fluid support significantly diminished pulmonary edema, improved lung mechanics, and resulted in significantly lower mortality rates in older subjects.

conclusionOur study demonstrates that conservative fluid alone can attenuate the age associated increase in ventilator associated mortality.

Indexed as

AgingAnimalsBronchoalveolar Lavage FluidFluid TherapyInflammationKaplan-Meier EstimateLungMaleMiceMice, Inbred C57BLTidal VolumeVentilator-Induced Lung InjuryAgingFluid managementMechanical ventilationPulmonary edemaRespiratory mechanicsVentilator associated mortalityVentilator-induced lung injury

Identifiers

PMID27188767
PMCPMC5589142
OpenAlexW2370454012

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

Registered trials

None linked

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.