4.5 Article

Association between renal replacement therapy in critically ill patients with severe acute kidney injury and mortality

期刊

JOURNAL OF CRITICAL CARE
卷 28, 期 6, 页码 1011-1018

出版社

W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.jcrc.2013.08.002

关键词

Acute kidney injury; Critical illness; Renal replacement therapy; RIFLE criteria; Mortality; Length of stay; Renal recovery

资金

  1. Austin Hospital Intensive Care Trust Fund

向作者/读者索取更多资源

Purpose: To evaluate the characteristics and outcomes of critically ill patients with severe acute kidney injury (AKI) treated and not treated with renal replacement therapy (RRT). Methods: Secondary analysis of a multi-centre cohort study. Primary exposure was RRT. Primary outcome was propensity and multi-variable adjusted-hospital mortality. Results: We studied 1250 patients (71.3%) who received and 502 (28.7%) who did not receive RRT. Reasons for not starting RRT (not mutually exclusive) were limitations of support (33.6%, n=169), adequate urine output (46.2%; n=232), plan to observe (56.4%; n=283), and advanced age (12.6%; n=63). Mortality was higher in those not receiving RRT due to limitations and advanced age but lower for adequate urine output and plan to observe. Propensity and multi-variable adjusted analysis showed no statistical difference in hospital mortality (adj-OR 1.47; 95% CI, 0.93-2.24) in patients receiving RRT. Results were similar in a sensitivity analysis restricted to patients fulfilling risk, injury, failure, loss, end-stage kidney disease-FAILURE criteria (37.0%; n=446) (adj-OR 1.36; 95% CI, 0.70-2.66). Conclusion: In this cohort, reasons for not starting RRT included limitations of support and perception of impending renal recovery. Despite similar risk of mortality after adjusting for selection bias and confounders, RRT-treated patients were fundamentally different from non-treated patients across a spectrum of variables that precludes valid comparison in observational data. (C) 2013 Elsevier Inc. All rights reserved.

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