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Published in: BMC Nephrology 1/2020

01-12-2020 | Acute Kidney Injury | Research article

The effect of glucocorticoids on serum cystatin C in identifying acute kidney injury: a propensity-matched cohort study

Authors: Silin Liang, Mai Shi, Yunpeng Bai, Yujun Deng, Miaoxian Fang, Jiaxin Li, Yijin Wu, Wenying Peng, Yating Hou, Heng Fang, Huidan Zhang, Chunbo Chen

Published in: BMC Nephrology | Issue 1/2020

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Abstract

Background

Glucocorticoids may impact the accuracy of serum cystatin C (sCysC) in reflecting renal function. We aimed to assess the effect of glucocorticoids on the performance of sCysC in detecting acute kidney injury (AKI) in critically ill patients.

Methods

A prospective observational cohort study was performed in a general intensive care unit (ICU). Using propensity score matching, we successfully matched 240 glucocorticoid users with 960 non-users among 2716 patients. Serum creatinine (SCr) and sCysC were measured for all patients at ICU admission. Patients were divided into four groups based on cumulative doses of glucocorticoids within 5 days before ICU admission (Group I: non-users; Group II: 0 mg < prednisone ≤50 mg; Group III: 50 mg < prednisone ≤150 mg; Group IV: prednisone > 150 mg). We compared the performance of sCysC for diagnosing and predicting AKI in different groups using the area under the receiver operator characteristic curve (AUC).

Results

A total of 240 patients received glucocorticoid medication within 5 days before ICU admission. Before and after matching, the differences of sCysC levels between glucocorticoid users and non-users were both significant (P <  0.001). The multiple linear regression analysis revealed that glucocorticoids were independently associated with sCysC (P <  0.001). After matching, the group I had significantly lower sCysC levels than the group III and group IV (P <  0.05), but there were no significant differences in sCysC levels within different glucocorticoids recipient groups (P > 0.05). Simultaneously, we did not find significant differences in the AUC between any two groups in the matched cohort (P > 0.05).

Conclusions

Glucocorticoids did not impact the performance of sCysC in identifying AKI in critically ill patients.
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Metadata
Title
The effect of glucocorticoids on serum cystatin C in identifying acute kidney injury: a propensity-matched cohort study
Authors
Silin Liang
Mai Shi
Yunpeng Bai
Yujun Deng
Miaoxian Fang
Jiaxin Li
Yijin Wu
Wenying Peng
Yating Hou
Heng Fang
Huidan Zhang
Chunbo Chen
Publication date
01-12-2020
Publisher
BioMed Central
Published in
BMC Nephrology / Issue 1/2020
Electronic ISSN: 1471-2369
DOI
https://doi.org/10.1186/s12882-020-02165-1

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