Evidence map›Paper›PMID 27832023›Full record

Observational studyPediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies2017

RBC Distribution Width: Biomarker for Red Cell Dysfunction and Critical Illness Outcome?

Ahmed S Said, Philip C Spinella, Mary E Hartman, Katherine M Steffen, Ronald Jackups, Richard Holubkov, Mike Wallendorf, Allan Doctor

Abstract readObservational Study
In one paragraph

Observational study in Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing 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.

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

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

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

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Ahmed S Said1Department of Pediatrics, Washington University in St. Louis, St. Louis, MO. 2Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO. 3Department of Biostatistics, Washington University in St. Louis, St. Louis, MO. 4Department of Biochemistry & Molecular Biophysics, Washington University in St. Louis, St. Louis, MO. 5Department of Pediatrics, University of Utah, Salt Lake City, UT.
Philip C Spinella
Mary E Hartman
Katherine M Steffen
Ronald Jackups
Richard Holubkov
Mike Wallendorf
Allan Doctor

Funding

Washington University Institute of Clinical and Translational SciencesUL1TR000448 · NCATS · WASHINGTON UNIVERSITY · PI EVANOFF, BRADLEY A · 2012 to 2016
$41.4M
Age of Blood in Children in Pediatric Intensive Care UnitsU01HL116383 · NHLBI · WASHINGTON UNIVERSITY · PI SPINELLA, PHILIP C · 2013 to 2018
$8.1M
SEPSIS-INDUCED RED CELL DYSFUNCTION (SIRD)R01GM113838 · NIGMS · WASHINGTON UNIVERSITY · PI DOCTOR, ALLAN, MARSHALL, GARLAND ROSS · 2015 to 2019
$4.0M
NCATS NIH HHS UL1 TR000448NHLBI NIH HHS U01 HL116383NIGMS NIH HHS R01 GM113838
6 · The paper itself

Abstract

objectivesRBC distribution width is reported to be an independent predictor of outcome in adults with a variety of conditions. We sought to determine if RBC distribution width is associated with morbidity or mortality in critically ill children.

designRetrospective observational study.

settingTertiary PICU. PATIENTS: All admissions to St. Louis Children's Hospital PICU between January 1, 2005, and December 31, 2012.

interventionsWe collected demographics, laboratory values, hospitalization characteristics, and outcomes. We calculated the relative change in RBC distribution width from admission RBC distribution width to the highest RBC distribution width during the first 7 days of hospitalization. Our primary outcome was ICU mortality or use of extracorporeal membrane oxygenation as a composite. Secondary outcomes were ICU- and ventilator-free days. MEASUREMENTS AND MAIN

resultsWe identified 3,913 eligible subjects with an estimated mortality (by Pediatric Index of Mortality 2) of 2.94% ± 9.25% and an actual ICU mortality of 2.91%. For the study cohort, admission RBC distribution width was 14.12% ± 1.89% and relative change in RBC distribution width was 2.63% ± 6.23%. On univariate analysis, both admission RBC distribution width and relative change in RBC distribution width correlated with mortality or the use of extracorporeal membrane oxygenation (odds ratio, 1.19 [95% CI, 1.12-1.27] and odds ratio, 1.06 [95% CI, 1.04-1.08], respectively; p < 0.001). After adjusting for confounding variables, including severity of illness, both admission RBC distribution width (odds ratio, 1.13; 95% CI, 1.03-1.24) and relative change in RBC distribution width (odds ratio, 1.04; 95% CI, 1.01-1.07) remained independently associated with ICU mortality or the use of extracorporeal membrane oxygenation. Admission RBC distribution width and relative change in RBC distribution width both weakly correlated with fewer ICU- (r = 0.038) and ventilator-free days (r = 0.05) (p < 0.001).

conclusionsIndependent of illness severity in critically ill children, admission RBC distribution width is associated with ICU mortality and morbidity. These data suggest that RBC distribution width may be a biomarker for RBC injury that is of sufficient magnitude to influence critical illness outcome, possibly via oxygen delivery impairment.

Indexed as

Critical CareErythrocyte IndicesHospital MortalitySeverity of Illness IndexAdolescentBiomarkersChildChild, PreschoolCritical IllnessErythrocytesExtracorporeal Membrane OxygenationFemaleHumansInfantInfant, NewbornIntensive Care Units, PediatricBiomarkers

Identifiers

PMID27832023
PMCPMC5291765

What OpenQuestion holds

Textmetadata
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.