Evidence map›Paper›PMID 41191680›Full record

SynthesisEinstein (Sao Paulo, Brazil)2025

Neutrophil-to-lymphocyte ratio as a predictor of mortality in patients with acute kidney injury: a systematic review and meta-analysis.

Idrys Henrique Leite Guedes, Fernando Uvinha, Isabela Lino Costa, Gustavo Martins de Ferreira, Luciano César Pontes de Azevedo, Paulo Ricardo Gessolo Lins

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Einstein (Sao Paulo, Brazil), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

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

1 citing paper in PubMed.

  1. Article
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.

Idrys Henrique Leite GuedesUniversidade Federal de Campina Grande, Campina Grande, PB, Brazil.ORCID http://orcid.org/0000-0003-2693-1535
Fernando UvinhaUniversidade Estadual de Campinas, Campinas, SP, Brazil.ORCID http://orcid.org/0009-0009-9939-1139
Isabela Lino CostaUniversidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil.ORCID http://orcid.org/0000-0003-1005-673X
Gustavo Martins de FerreiraUniversidade Estadual Paulista, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0001-8976-6659
Luciano César Pontes de AzevedoHospital Israelita Albert Einstein, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0001-6759-3910
Paulo Ricardo Gessolo LinsEscola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0003-1806-1285

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionAcute kidney injury is a common and serious condition in critically ill patients. Current biomarkers, such as serum creatinine, are limited in early detection and prognostic assessment. The neutrophil-to-lymphocyte ratio has emerged as a promising inflammatory biomarker, reflecting systemic inflammation and potentially serving as a tool for risk stratification in high-risk groups.

objectiveTo evaluate the prognostic value of the neutrophil-to-lymphocyte ratio in predicting mortality in patients with acute kidney injury through a systematic review and meta-analysis.

methodsA comprehensive search was conducted in PubMed, Embase, Cochrane, and LILACS databases for full-text articles published from the inception of each database until June 2024, using terms related to neutrophil-to-lymphocyte ratio and acute kidney injury. Studies were included if they evaluated the relationship between neutrophil-to-lymphocyte ratio and mortality in acute kidney injury patients. Data were pooled for meta-analysis using a random-effects model, with sensitivity, specificity, and area under the curve (AUC) calculated.

resultsOf the 806 studies identified, five met the inclusion criteria, encompassing a total of 2,424 patients. The pooled sensitivity and specificity of the neutrophil-to-lymphocyte ratio for predicting mortality were 0.58 (95%CI=0.51-0.65) and 0.65 (95%CI=0.59-0.71), respectively. The AUC was 0.65, suggesting moderate predictive power. Significant heterogeneity was observed across studies owing to differences in neutrophil-to-lymphocyte ratio cutoff points, patient populations, and outcomes analyzed.

conclusionAn elevated neutrophil-to-lymphocyte ratio is associated with a worse prognosis in patients with acute kidney injury, highlighting its potential as a readily available biomarker for risk stratification.Prospero database registration: CRD42024569162.

Indexed as

Acute Kidney InjuryLymphocytesNeutrophilsBiomarkersHumansLeukocyte CountLymphocyte CountPredictive Value of TestsPrognosisRisk AssessmentSensitivity and SpecificityBiomarkers

Identifiers

PMID41191680
PMCPMC12539831

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.