Evidence map›Paper›PMID 40033758›Full record

ArticleRenal failure2025

The blood urea nitrogen-to-creatinine ratio is associated with acute kidney injury among COVID-19 patients.

Xiaoli Zhong, Xuejie Wang, Xiaobei Feng, Haijin Yu, Zijin Chen, Xiaonong Chen

Abstract read
In one paragraph

Article in Renal failure, 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.

Xiaoli ZhongDepartment of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Xuejie WangDepartment of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Xiaobei FengDepartment of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Haijin YuDepartment of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Zijin ChenDepartment of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Xiaonong ChenDepartment of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionTo explore the associations between the blood urea nitrogen-to-creatinine ratio (BCR), acute kidney injury (AKI), and in-hospital mortality in coronavirus disease 2019 (COVID-19) patients.

methodsCOVID-19 patients from Ruijin Hospital LuWan Branch, Shanghai Jiao Tong University School of Medicine were enrolled in this study. Clinical data and laboratory parameters were collected. AKI was defined using two serum creatinine tests according to KDIGO guidelines. Cox regression and receiver operating characteristic (ROC) curve analyses were performed.

resultsFive hundred and sixty-seven COVID-19 patients were enrolled, 44.1% of whom were male. The mean age was 75 years. Among all patients, 17 patients developed AKI, and 30 patients died during hospitalization. Compared to non-AKI patients, the BCR in AKI patients was significantly greater. BCR was significantly associated with AKI (unadjusted HR 1.04, 95% CI: 1.02-1.05,

conclusionsThe BCR, a simple index, is associated with AKI onset and mortality in COVID-19 patients. The BCR possesses certain specificity for AKI screening, which indicates an effective clinical indicator for screening patients at high risk of AKI.

Indexed as

Acute Kidney InjuryBlood Urea NitrogenCOVID-19CreatinineAgedAged, 80 and overBiomarkersChinaFemaleHospital MortalityHumansMaleMiddle AgedRetrospective StudiesRisk FactorsROC CurveBiomarkersCreatinineacute kidney injury (AKI)Blood urea nitrogen-to-creatinine ratio (BCR)COVID-19mortality

Identifiers

PMID40033758
PMCPMC11881656

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.