Goal-directed perfusion to reduce acute kidney injury: A randomized trial

Marco Ranucci, Ian Johnson, Timothy Willcox, Robert A Baker, Christa Boer, Andreas Baumann, George A Justison, Filip de Somer, Paul Exton, Seema Agarwal, Rachael Parke, Richard F Newland, Renard G Haumann, Dirk Buchwald, Nathaen Weitzel, Rajamiyer Venkateswaran, Valeria Pistuddi

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

OBJECTIVE: To determine whether a goal-directed perfusion (GDP) strategy aimed at maintaining oxygen delivery (DO2) at ≥280 mL·min-1·m-2 reduces the incidence of acute kidney injury (AKI).

METHODS: This multicenter randomized trial enrolled a total of 350 patients undergoing cardiac surgery in 9 institutions. Patients were randomized to receive either GDP or conventional perfusion. A total of 326 patients completed the study and were analyzed. Patients in the treatment arm were treated with a GDP strategy during cardiopulmonary bypass (CPB) aimed to maintain DO2 at ≥280 mL·min-1·m-2. The perfusion strategy for patients in the control arm was factored on body surface area and temperature. The primary endpoint was the rate of AKI. Secondary endpoints were intensive care unit length of stay, major morbidity, red blood cell transfusions, and operative mortality.

RESULTS: Acute Kidney Injury Network (AKIN) stage 1 was reduced in patients treated with GDP (relative risk [RR], 0.45; 95% confidence interval [CI], 0.25-0.83; P = .01). AKIN stage 2-3 did not differ between the 2 study arms (RR, 1.66; 95% CI, 0.46-6.0; P = .528). There were no significant differences in secondary outcomes. In a prespecified analysis of patients with a CPB time between 1 and 3 hours, the differences in favor of the treatment arm were more pronounced, with an RR for AKI of 0.49 (95% CI, 0.27-0.89; P = .017).

CONCLUSIONS: A GDP strategy is effective in reducing AKIN stage 1 AKI. Further studies are needed to define perfusion interventions that may reduce more severe levels of renal injury (AKIN stage 2 or 3).

Original languageEnglish
Pages (from-to)1918-1927
Number of pages10
JournalJournal of Thoracic and Cardiovascular Surgery
Volume156
Issue number5
Early online date18 Apr 2018
DOIs
Publication statusPublished - 2018

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