首页|Association between hyperglycemia at ICU admission and postoperative acute kidney injury in patients undergoing cardiac surgery:Analysis of the MIMIC-Ⅳ database

Association between hyperglycemia at ICU admission and postoperative acute kidney injury in patients undergoing cardiac surgery:Analysis of the MIMIC-Ⅳ database

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Background:This study aimed to explore the correlation between hyperglycemia at intensive care unit(ICU)admission and the incidence of acute kidney injury(AKI)in patients after cardiac surgery.Methods:We conducted a retrospective cohort study,in which clinical data were extracted from the Medical Information Mart for Intensive Care(MIMIC)-Ⅳ database.Adults(≥ 18 years)in the database who were admitted to the cardiovascular intensive care unit after cardiac surgery were enrolled.The primary outcome was the incidence of AKI within 7 days following ICU admission.Secondary outcomes included ICU mortality,hospital mortality,ICU length of stay,and the 28-day and 90-day mortality.Multivariable Cox regression analysis was used to assess the association between ICU-admission hyperglycemia and AKI incidence within 7 days of ICU admission.Different adjustment strategies were used to adjust for potential confounders.Patients were divided into three groups according to their highest blood glucose levels recorded within 24 h of ICU admission:no hyperglycemia(＜140 mg/dL),mild hyperglycemia(140-200 mg/dL),and severe hyperglycemia(≥200 mg/dL).Results:Of the 6905 included patients,2201(31.9％)were female,and the median(IQR)age was 68.2(60.1-75.9)years.In all,1836(26.6％)patients had severe hyperglycemia.The incidence of AKI within 7 days of ICU admission,ICU mortality,and hospital mortality was significantly higher in patients with severe admission hyperglycemia than those with mild hyperglycemia or no hyperglycemia(80.3％vs.73.6％and 61.2％,respec-tively;2.8％vs.0.9％and 1.9％,respectively;and 3.4％vs.1.2％and 2.5％,respectively;all P＜0.001).Severe hyperglycemia was a risk factor for 7-day AKI(Model 1:hazard ratio[HR]=1.4809,95％confidence interval[CI]:1.3126 to 1.6707;Model 2:HR=1.1639,95％CI:1.0176 to 1.3313;Model 3:HR=1.2014,95％CI:1.0490 to 1.3760;all P＜0.050).Patients with normal glucose levels(glucose levels＜140 mg/dL)had a higher 28-day mortality rate than those with severe hyperglycemia(glucose levels ≥200 mg/dL)(4.0％vs.3.8％,P＜0.001).Conclusions:In post-cardiac surgery patients,severe hyperglycemia within 24 h of ICU admission increases the risk of 7-day AKI,ICU mortality,and hospital mortality.Clinicians should be extra cautious regarding AKI among patients with hyperglycemia at ICU admission after cardiac surgery.

HyperglycemiaCardiac surgeryAcute kidney injuryMortalityMIMIC database

Juan Ruan、Weipeng Huang、Jun Jiang、Chang Hu、Yiming Li、Zhiyong Peng、Shuhan Cai

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Department of Critical Care Medicine,Zhongnan Hospital of Wuhan University,Wuhan,Hubei,China

Clinical Research Center of Hubei Critical Care Medicine,Wuhan,Hubei,China

Department of Critical Care Medicine,Sir Run Run Shaw Hospital,Zhejiang University School of Medicine,Hangzhou,Zhejiang,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaTranslational Medicine and Interdisciplinary Research Joint Fund of Zhongnan Hospital of Wuhan UniversitySubject Cultivation Project of Zhongnan Hospital of Wuhan UniversitySubject Cultivation Project of Zhongnan Hospital of Wuhan University

8197181682272208BH ZNJC202011ZNXKPY2021001ZNXKPY2021002

2024

10.1016/j.jointm.2024.04.004

重症医学(英文)

重症医学(英文)

ISSN：
年,卷(期)：2024.4(4)