Evidence map›Paper›PMID 36367845›Full record

SynthesisActa anaesthesiologica Scandinavica2023

The prognostic value of elevated neutrophil-lymphocyte ratio for cardiac surgery-associated acute kidney injury: A systematic review and meta-analysis.

Joseph Wheatley, Zhengyang Liu, Joel Loth, Mark P Plummer, Jahan C Penny-Dimri, Reny Segal, Julian Smith, Luke A Perry

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Acta anaesthesiologica Scandinavica, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
2.6field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 19 citations in OpenAlex.

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  7. The Association Between Platelet Indices and Osteoarthritis: A Systematic Review and Meta-analysis.Clinical medicine insights. Arthritis and musculoskeletal disorders · 2026
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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 at 3 institutions in 1 country.

Joseph WheatleyDepartment of Anaesthesia, Perioperative Medicine and Pain Medicine, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0002-1312-7735
Zhengyang LiuDepartment of Anaesthesia, Royal Melbourne Hospital, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0002-6114-8629
Joel LothDepartment of Anaesthesia, Royal Melbourne Hospital, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0002-3949-9764
Mark P PlummerDepartment of Critical Care, Melbourne Medical School, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0002-9640-1911
Jahan C Penny-DimriDepartment of Surgery (School of Clinical Sciences at Monash Health), Monash University, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0001-8148-1237
Reny SegalDepartment of Anaesthesia, Royal Melbourne Hospital, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0001-5805-5491
Julian SmithDepartment of Surgery (School of Clinical Sciences at Monash Health), Monash University, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0003-1244-4277
Luke A PerryDepartment of Anaesthesia, Royal Melbourne Hospital, Melbourne, Victoria, Australia.ORCID https://orcid.org/0000-0002-7494-8406
The Royal Melbourne Hospital · AUMonash Health · AURoyal Adelaide Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients undergoing cardiac surgery are at significant risk of developing postoperative acute kidney injury (AKI). Neutrophil-lymphocyte ratio (NLR) is a widely available inflammatory biomarker which may be of prognostic value in this setting.

methodsWe conducted a systematic review and meta-analysis of studies reporting associations between perioperative NLR with postoperative AKI. We searched Medline, Embase and the Cochrane Library, without language restriction, from inception to May 2022 for relevant studies. We meta-analysed the reported odds ratios (ORs) with 95% confidence intervals (CIs) for both elevated preoperative and postoperative NLR with risk of postoperative AKI and need for renal replacement therapy (RRT). We conducted a meta-regression to explore inter-study statistical heterogeneity.

resultsTwelve studies involving 10,724 participants undergoing cardiac surgery were included, with eight studies being deemed at high risk of bias using PROBAST modelling. We found statistically significant associations between elevated preoperative NLR and postoperative AKI (OR 1.45, 95% CI 1.18-1.77), as well as postoperative need for RRT (OR 2.37, 95% CI 1.50-3.72). Postoperative NLR measurements were not of prognostic significance.

conclusionsElevated preoperative NLR is a reliable inflammatory biomarker for predicting AKI following cardiac surgery.

Indexed as

Acute Kidney InjuryCardiac Surgical ProceduresBiomarkersHumansLymphocytesNeutrophilsPrognosisBiomarkersAcute Kidney InjuryBiomarkerCardiac SurgeryNeutrophil-lymphocyte ratio

Identifiers

PMID36367845
PMCPMC10099461
OpenAlexW4308771932

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.