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KMID : 0311120230640030181
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Yonsei Medical Journal
2023 Volume.64 No. 3 p.181 ~ p.190
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Identification of Biomarkers for the Diagnosis of Sepsis-Associated Acute Kidney Injury and Prediction of Renal Recovery in the Intensive Care Unit
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Kwak Se-Hyun
Ahn Sun-Young
Shin Mi-Hwa
Leem Ah-Young
Lee Su-Hwan
Chung Kyung-Soo
Kim Young-Sam
Lee Sang-Guk
Park Moo-Suk
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Abstract
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Purpose: Acute kidney injury (AKI) following sepsis is associated with higher mortality; however, reliable biomarkers for AKI de velopment and recovery remain to be elucidated.
Materials and Methods: Patients with sepsis admitted to the medical intensive care unit (ICU) of Severance Hospital between June 2018 and May 2019 were prospectively analyzed. Patients were divided into those with and without AKI within 48 hours. Patients with septic AKI were subdivided into AKI-recovery and non-recovery groups based on whether their kidney injury recovered with in 7 days.
Results: A total of 84 patients were enrolled. The baseline creatinine (2.9 mg/dL vs. 0.8 mg/dL vs. 1.2 mg/dL, p<0.001), Charlson Comorbidity Index (4.5 vs. 2.0 vs. 3.0, p=0.002), Sequential Organ Failure Assessment (10.0 vs. 6.5 vs. 8.0, p<0.001), and Acute Physiology and Chronic Health Evaluation II scores (32.0 vs. 21.5 vs. 30.5, p=0.004) were higher in the non-recovery AKI group compared to the non-AKI and AKI-recovery groups. The Kaplan-Meier curves revealed that non-recovery from AKI was associated with lower survival (p<0.001). High-lactate (p≤0.05) and kynurenine levels (p≤0.05) were associated with non-recovery of renal func tion following AKI. The areas under the curve for predicting non-recovery from AKI were 0.693 and 0.721 for lactate and kynurenine, respectively. The survival rate was lower in the high-kynurenine (p=0.040) and high-lactate (p=0.010) groups.
Conclusion: The mortality of patients who recovered from AKI was comparable to that of patients without AKI. Lactate and kyn urenine could be useful biomarkers for the diagnosis and recovery of AKI following sepsis.
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KEYWORD
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Intensive care units, biomarkers, sepsis, acute kidney injury
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