Evidence map›Paper›PMID 37197805›Full record

ArticleClinical medicine (London, England)2023

Anaemia of acute inflammation: a higher acute systemic inflammatory response is associated with a larger decrease in blood haemoglobin levels in patients with COVID-19 infection.

Colin J Crooks, Joe West, Joanne R Morling, Mark Simmonds, Irene Juurlink, Steve Briggs, Simon Cruickshank, Susan Hammond-Pears, Dominick Shaw, Timothy R Card and 1 more

Open access · diamondAbstract readCase Reports
In one paragraph

Article in Clinical medicine (London, England), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

9 citing papers in PubMed, 11 citations in OpenAlex.

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  9. Listening to the patient, listening to the data.Clinical medicine (London, England) · 2023
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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

11 authors at 2 institutions in 1 country.

Colin J CrooksUniversity of Nottingham, Nottingham, UK.
Joe WestUniversity of Nottingham, Nottingham, UK.
Joanne R MorlingUniversity of Nottingham, Nottingham, UK.
Mark SimmondsNottingham University Hospitals NHS Trust, Nottingham, UK.
Irene JuurlinkNottingham University Hospitals NHS Trust, Nottingham, UK.
Steve BriggsNottingham University Hospitals NHS Trust, Nottingham, UK.
Simon CruickshankNottingham University Hospitals NHS Trust, Nottingham, UK.
Susan Hammond-PearsNottingham University Hospitals NHS Trust, Nottingham, UK.
Dominick ShawUniversity of Nottingham, Nottingham, UK.
Timothy R CardUniversity of Nottingham, Nottingham, UK.
Andrew W FogartyUniversity of Nottingham, Nottingham, UK andrew.fogarty@nottingham.ac.uk.
University of Nottingham · GBNottingham University Hospitals NHS Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThe study tests the hypothesis that a higher acute systemic inflammatory response was associated with a larger decrease in blood hemoglobin levels in patients with Coronavirus 2019 (COVID-19) infection.

methodsAll patients with either suspected or confirmed COVID-19 infection admitted to a busy UK hospital from February 2020 to December 2021 provided data for analysis. The exposure of interest was maximal serum C-reactive protein (CRP) level after COVID-19 during the same admission.

resultsA maximal serum CRP >175mg/L was associated with a decrease in blood haemoglobin (-5.0 g/L, 95% confidence interval: -5.9 to -4.2) after adjustment for covariates, including the number of times blood was drawn for analysis.Clinically, for a 55-year-old male patient with a maximum haemoglobin of 150 g/L who was admitted for a 28-day admission, a peak CRP >175 mg/L would be associated with an 11 g/L decrease in blood haemoglobin, compared with only 6 g/L if the maximal CRP was <4 mg/L.

conclusionsA higher acute systemic inflammatory response is associated with larger decreases in blood haemoglobin levels in patients with COVID-19. This represents an example of anaemia of acute inflammation, and a potential mechanism by which severe disease can increase morbidity and mortality.

Indexed as

AnemiaCOVID-19HemoglobinsHumansInflammationMaleMiddle AgedSystemic Inflammatory Response SyndromeHemoglobinsanaemiaCOVID-19infectioninflammation

Identifiers

PMID37197805
PMCPMC11046552
OpenAlexW4376959454

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.