Evidence map›Paper›PMID 32131878›Full record

ArticleCritical care (London, England)2020

Brain BOLD MRI O

W Alan C Mutch, Renée El-Gabalawy, Lawrence Ryner, Josep Puig, Marco Essig, Kayla Kilborn, Kelsi Fidler, M Ruth Graham

2 registry-linked trialsOpen access · goldAbstract read
In one paragraph

Article in Critical care (London, England), 2020. 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 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.3field-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.

NCT02126215 unknown statusnot on this map

"Blue" Cerebrovascular Reactivity (CVR) Maps as a Marker for Post-operative Delirium (POD) in Patients Undergoing Abdominal Aortic Aneurysm (AAA) Surgery: A Pilot Study: Addition of Other Patients Being Admitted to SSCU After Major Surgery

TypeobservationalSponsorUniversity of ManitobaRan2014 to 2020Enrolled20ConditionsPostoperative DeliriumArmsMRI CO2 and O2 stress testing
NCT04406350 naunknown statusnot on this map

Feasibility Study of Isoxic/Normocapnic End-tidal Gas Control to Decrease Incidence of Postoperative Delirium (POD) During Anesthetic Management

TypeinterventionalSponsorUniversity of ManitobaRan2020 to 2021Enrolled12ConditionsPost-Operative Confusion, Delirium, Anesthesia ComplicationArmsIntraoperative tight control of respiratory end-tidal gases
3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 27 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. Review
  5. Observational
  6. Observational
  7. Review
  8. Article
  9. Article
  10. In reply: Hyperoxia-induced brain ischemia: the Strawman comes up short.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2021
    Article
  11. Review
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.

W Alan C MutchDepartment of Anesthesiology, Perioperative and Pain Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor, Harry Medovy House, 671 William Ave., Winnipeg, MB, R3E 0Z2, Canada. wacmutch@shaw.ca.ORCID 0000-0001-7174-7839
Renée El-GabalawyDepartment of Anesthesiology, Perioperative and Pain Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor, Harry Medovy House, 671 William Ave., Winnipeg, MB, R3E 0Z2, Canada.
Lawrence RynerCanada North Concussion Network.
Josep PuigDepartment of Radiology, University of Manitoba, Winnipeg, Canada.
Marco EssigCanada North Concussion Network.
Kayla KilbornDepartment of Anesthesiology, Perioperative and Pain Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor, Harry Medovy House, 671 William Ave., Winnipeg, MB, R3E 0Z2, Canada.
Kelsi FidlerDepartment of Anesthesiology, Perioperative and Pain Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor, Harry Medovy House, 671 William Ave., Winnipeg, MB, R3E 0Z2, Canada.
M Ruth GrahamDepartment of Anesthesiology, Perioperative and Pain Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor, Harry Medovy House, 671 William Ave., Winnipeg, MB, R3E 0Z2, Canada.
University of Manitoba · CAOntario Stroke Network · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMechanical ventilation to alter and improve respiratory gases is a fundamental feature of critical care and intraoperative anesthesia management. The range of inspired O

methodsWe examine the effects of controlled alterations in both ET O

resultsDynamic alterations in regional BOLD and CBF were seen in all subjects with expected and inverse brain voxel responses to both stimuli. These effects were incremental and rapid (within seconds). The most dramatic effects were seen with combined hyperoxia and hypocapnia. Inverse responses increased with age suggesting greater risk.

conclusionsHuman CBF responds dramatically to alterations in ET gas tensions commonly seen during anesthesia and in critical care. Such alterations may contribute to delirium following surgery and under certain circumstances in the critical care environment.

trial registrationClincialTrials.gov NCT02126215 for some components of the study. First registered April 29, 2014.

Indexed as

AdultBlood Gas AnalysisCarbon DioxideFemaleHumansHyperoxiaHypocapniaMagnetic Resonance ImagingMaleMiddle AgedNeurocognitive DisordersOxygenPostoperative ComplicationsCarbon DioxideOxygenAnesthesiaBOLDCO2Cognitive dysfunctionCritical careDeliriumMechanical ventilationMRIO2

Identifiers

PMID32131878
PMCPMC7057494
OpenAlexW3011159901

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.