Journal
JOURNAL OF CARDIOTHORACIC AND VASCULAR ANESTHESIA
Volume 33, Issue 10, Pages 2695-2702Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1053/j.jvca.2019.03.023
Keywords
acute kidney injury; cardiac surgery; serum creatinine; fluid balance
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Funding
- Science and Technology Commission of Shanghai Municipality [14DZ2260200]
- Shanghai Clinical Medical Center for Kidney Disease Project
- Shanghai Municipal Health Commission [2017ZZ01015]
- Shanghai ShenKang Hospital Development Center [SHDC12018127]
- Shanghai Municipal Hospital Frontier Technology Project
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Objectives: Cumulative fluid overload may influence acute kidney injury (AKI) diagnosis due to the dilution effect. The authors hypothesized a small increase of early postoperative serum creatinine (SCr) adjusted for fluid balance might have superior discrimination ability in subsequent AKI prediction. Design: Retrospective analyses. Setting: A single-center study in a university hospital. Participants: The study comprised 1,016 adult patients who underwent elective isolated or combined valve surgery in 2015. Interventions: None. Measurements and Main Results: Baseline characteristics, intraoperative parameters, and intraoperative and postoperative fluid balance were collected through a retrospective chart review. Early postoperative SCr level was drawn within 12 hours of surgical completion and then measured daily. Early relative changes of SCr were categorized as a cutoff value of 10% with or without adjustment for cumulative fluid balance. Kidney Disease: Improving Global Outcomes criteria were used to detect AKI. Logistic analyses were performed to determine risk factors for subsequent AKI with the inclusion of measured or fluid-adjusted early relative changes of SCr, respectively. In this study, 355 patients (34.9%) developed AM. Multivariate logistic analyses showed age, weight, European System for Cardiac Operative Risk Evaluation II, and cardiopulmonary bypass duration were associated independently with the development of AKI. Model discrimination for AKI prediction was improved significantly when the addition of measured (area under the receiver operating characteristic curve [AUROC] 0.830) and fluid-adjusted early changes of SCr to the basic model (AUROC 0.850). Conclusions: Early fluid-adjusted relative changes of SCr could improve the predictive ability for subsequent development of AKI in valve surgery patients. (C) 2019 The Authors. Published by Elsevier Inc.
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