Evidence map›Paper›PMID 32216958›Full record

ArticleBritish journal of anaesthesia2020

A retrospective cohort study on the association between elevated preoperative red cell distribution width and all-cause mortality after noncardiac surgery.

Halldor B Olafsson, Gissur A Sigurdarson, Kenneth B Christopher, Sigurbergur Karason, Gisli H Sigurdsson, Martin I Sigurdsson

Abstract read
In one paragraph

Article in British journal of anaesthesia, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–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

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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

19 citing papers in PubMed.

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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

6 authors.

Halldor B OlafssonFaculty of Medicine, University of Iceland, Reykjavik, Iceland.
Gissur A SigurdarsonFaculty of Medicine, University of Iceland, Reykjavik, Iceland.
Kenneth B ChristopherDivision of Renal Medicine, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
Sigurbergur KarasonFaculty of Medicine, University of Iceland, Reykjavik, Iceland; Division of Anaesthesia and Intensive Care Medicine, Landspitali, National University Hospital of Iceland, Reykjavik, Iceland.
Gisli H SigurdssonFaculty of Medicine, University of Iceland, Reykjavik, Iceland; Division of Anaesthesia and Intensive Care Medicine, Landspitali, National University Hospital of Iceland, Reykjavik, Iceland.
Martin I SigurdssonFaculty of Medicine, University of Iceland, Reykjavik, Iceland; Division of Anaesthesia and Intensive Care Medicine, Landspitali, National University Hospital of Iceland, Reykjavik, Iceland. Electronic address: martiningi@gmail.com.

Funding

Pharmacokinetics and metabolomics of vitamin D supplementation in critical illnessR01GM115774 · NIGMS · BRIGHAM AND WOMEN'S HOSPITAL · PI CHRISTOPHER, KENNETH BRUCE · 2016 to 2018
$940k
NIGMS NIH HHS R01 GM115774
6 · The paper itself

Abstract

backgroundElevated red cell distribution width (RDW) has been associated with worse outcomes in several medical patient populations. The aim of this study was to investigate the association of increased preoperative RDW and short- and long-term mortality after noncardiac surgery.

methodsThis investigation was a retrospective cohort study including all patients undergoing noncardiac surgery between 2005 and 2015 at Landspitali-the National University Hospital in Iceland. Patients were separated into five predefined groups based on preoperative RDW (≤13.3%, 13.4-14.0%, 14.1-14.7%, 14.8-15.8%, and >15.8%). The primary outcome was all-cause long-term mortality and secondary outcomes included 30-day mortality, length of stay, and readmissions within 30 days, compared with propensity score matched (PSM) cohort from patients with RDW ≤13.3%.

resultsThere was a higher hazard of long-term mortality for patients with RDW between 14.8% and 15.8% (hazard ratio=1.33; 95% confidence interval, 1.15-1.59; P<0.001) and above 15.8% (hazard ratio=1.66; 95% confidence interval, 1.41-1.95; P<0.001), compared with matched controls with RDW ≤13.3%. This association held in multiple patient subgroups. For secondary outcomes, there was no difference in 30-day mortality, length of stay, or risk of readmission within 30 days.

conclusionsIncreased preoperative RDW is associated with increased long-term mortality after noncardiac surgery. RDW could be a composite biomarker of pre-existing chronic inflammation and poor nutritional status. Future studies should clarify if this is a modifiable risk factor for improved surgical outcomes.

Indexed as

Surgical Procedures, OperativeAdolescentAdultAgedAged, 80 and overCohort StudiesErythrocyte IndicesFemaleHumansMaleMiddle AgedPostoperative ComplicationsPreoperative CarePrognosisProportional Hazards ModelsRetrospective Studiesinflammationmortalitynoncardiac surgeryperioperative outcomepropensity score matchingred cell distribution width

Identifiers

PMID32216958
PMCPMC7931157

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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.