Evidence map›Paper›PMID 34195769›Full record

SynthesisAmerican journal of critical care : an official publication, American Association of Critical-Care Nurses2021

Meta-analysis of ICU Delirium Biomarkers and Their Alignment With the NIA-AA Research Framework.

Carol K Chan, Yiqing Song, Ryan Greene, Heidi Lindroth, Sikandar Khan, Gabriel Rios, Babar Khan, Sophia Wang

Abstract readMeta-Analysis
In one paragraph

Synthesis in American journal of critical care : an official publication, American Association of Critical-Care Nurses, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 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.

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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Observational
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
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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

8 authors.

Carol K ChanCarol K. Chan is a clinical fellow in geriatric psychiatry, Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland.
Yiqing SongYiqing Song is a professor, Fairbanks School of Public Health, Indiana University, Indianapolis.
Ryan GreeneRyan Greene is an assistant professor, Department of Psychiatry, Indiana University School of Medicine, Indianapolis.
Heidi LindrothHeidi Lindroth is a postdoctoral fellow, Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine; Indiana Center for Aging Research, Regenstrief Institute, Indianapolis; and Center for Health Innovation and Implementation Science, Indianapolis.
Sikandar KhanSikandar Khan is an assistant professor, Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine; Indiana Center for Aging Research, Regenstrief Institute, Indianapolis; and Center for Health Innovation and Implementation Science, Indianapolis.
Gabriel RiosGabriel Rios is director, Ruth Lilly Medical Library, Indiana University School of Medicine.
Babar KhanBabar Khan is an associate professor, Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine; Indiana Center for Aging Research, Regenstrief Institute, Indianapolis; and Center for Health Innovation and Implementation Science, Indianapolis.
Sophia WangSophia Wang is an assistant professor, Department of Psychiatry, Indiana University School of Medicine, and Indiana Alzheimer's Disease Research Center, Indiana University School of Medicine.

Funding

Research Education ComponentP30AG010133 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI SAYKIN, ANDREW J · 1991 to 2020
$37.3M
Research Education ComponentP30AG072976 · NIA · INDIANA UNIVERSITY INDIANAPOLIS · PI ANDREW J SAYKIN · 2021 to 2026
$24.1M
IU Training Program in Molecular Physiology and Clinical Mechanisms of Lung DiseaseT32HL091816 · NHLBI · INDIANA UNIVERSITY INDIANAPOLIS · PI Erick Forno, Roberto F. Machado · 2009 to 2026
$4.3M
Decreasing Alzheimer's Disease and Related Dementias after Delirium-Exercise and Cognitive Training (DDD-ECT)R01AG055391 · NIA · INDIANA UNIVERSITY INDIANAPOLIS · PI KHAN, BABAR A · 2017 to 2021
$3.5M
Mobile Critical Care Recovery Program (m-CCRP) for Acute Respiratory Failure (ARF) SurvivorsR01HL131730 · NHLBI · INDIANA UNIVERSITY INDIANAPOLIS · PI KHAN, BABAR A · 2017 to 2021
$3.2M
The Role of ICU Delirium and Vascular Risk Factors in the Development of Post-ICU Cognitive Impairment and DementiaK23AG062555 · NIA · INDIANA UNIVERSITY INDIANAPOLIS · PI WANG, SOPHIA · 2019 to 2023
$808k
NHLBI NIH HHS R01 HL131730NHLBI NIH HHS T32 HL091816NIA NIH HHS K23 AG062555NIA NIH HHS P30 AG010133NIA NIH HHS P30 AG072976NIA NIH HHS R01 AG055391
6 · The paper itself

Abstract

backgroundBetween 30% and 80% of survivors of critical illness experience cognitive impairment, but the underlying mechanisms remain unknown.

objectiveTo determine whether intensive care unit (ICU) delirium biomarkers align with the National Institute on Aging-Alzheimer's Association (NIA-AA) research framework for diagnostic biomarkers for Alzheimer disease and other related dementias (ADRD).

methodsOvid MEDLINE, PsycInfo, Embase, and the Cochrane Library were systematically searched for articles published between January 1, 2000, and February 20, 2020, on the relationship between delirium and biomarkers listed in the NIA-AA framework. Only studies that addressed delirium in the ICU setting and fluid biomarkers were included in these analyses.

resultsOf 61 256 records screened, 38 studies met inclusion criteria, 8 of which were suitable for meta-analysis. In pooled analysis, significant associations were found between ICU delirium and amyloid β-peptide 1-40 (standard mean difference [SMD], 0.42; 95% CI, 0.09-0.75), interleukin (IL)-1 receptor antagonist (SMD, 0.58; 95% CI, 0.21-0.94), and IL-6 (SMD, 0.31; 95% CI, 0.06-0.56). No significant association was observed in pooled analyses between ICU delirium and the other biomarkers. Few studies have examined ICU delirium and pathologic tau or neurodegeneration biomarkers.

conclusionsInflammatory biomarkers and amyloid β are associated with ICU delirium and point to potential overlapping mechanisms between delirium and ADRD. Critical care providers should consider integrating diagnostic approaches used in ADRD in their assessment of post-ICU cognitive dysfunction.

Indexed as

DeliriumIntensive Care UnitsAlzheimer DiseaseBiomarkersHumansNational Institute on Aging (U.S.)United StatesBiomarkers

Identifiers

PMID34195769
PMCPMC8897570

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.