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  • Title: Acute Kidney Injury After Total Arch Replacement Combined With Frozen Elephant Trunk Implantation: Incidence, Risk Factors, and Outcome.
    Author: Zhou H, Wang G, Yang L, Shi S, Li J, Wang M, Zhang C, Li H, Qian X, Sun X, Chang Q, Yu C.
    Journal: J Cardiothorac Vasc Anesth; 2018 Oct; 32(5):2210-2217. PubMed ID: 29571643.
    Abstract:
    OBJECTIVES: Acute kidney injury (AKI) is common after thoracic aortic surgery and is a significant predictor of morbidity and mortality. Total arch replacement (TAR) combined with frozen elephant trunk (FET) implantation has been reported to produce satisfactory clinical outcomes, whereas several features of the surgical procedure may induce postoperative AKI. The authors aimed to clarify the incidence of and risk factors for postoperative AKI and the association of AKI with short-term outcomes. DESIGN: This study was a retrospective analysis of a prospectively collected cohort. A multivariate logistic regression model was used to identify predictors of postoperative AKI. SETTING: Single center. PARTICIPANTS: Clinical data were analyzed for 553 consecutive patients who underwent TAR combined with FET implantation between 2013 and 2016. INTERVENTIONS: None MEASUREMENTS AND MAIN RESULTS: Postoperative AKI was defined using the Kidney Disease Improving Global Outcomes criteria. Postoperative AKI occurred in 77.6% of the whole cohort. Patients in stage 3 AKI were associated with a higher incidence of major adverse events and in-hospital and 90-day mortality (p < 0.001, p < 0.05, p < 0.01, respectively). In the multivariate analysis, male sex (odds ratio [OR] 1.94; 95% confidence interval [95% CI] 1.22-3.18; p = 0.005); older age (per 10 years) (OR 1.37; 95% CI 1.14-1.67; p = 0.001); elevated body mass index (per 5 kg/m2) (OR 1.41; 95% CI 1.08-1.87; p = 0.01); and prolonged cardiopulmonary bypass duration (per 30 minutes) (OR 1.17; 95% CI 1.01-1.37; p = 0.03) were identified as independent predictors of postoperative AKI. CONCLUSION: TAR combined with FET implantation carries a high-risk for postoperative AKI compared with other types of thoracic aortic surgeries. Cardiopulmonary bypass duration was identified as the only modifiable predictor of AKI, and patients may benefit from moderate hypothermic circulatory arrest instead of deep hypothermic circulatory arrest.
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