Abstract
BackgroundAcute kidney injury (AKI) is a common complication of extracorporeal membrane oxygenation (ECMO) treatment. The aim of this study was to elucidate the long-term outcomes of adult patients with AKI who receive ECMO.Materials and methodsThe study analyzed encrypted datasets from Taiwan’s National Health Insurance Research Database. The data of 3251 patients who received first-time ECMO treatment between January 1, 2003, and December 31, 2013, were analyzed. Characteristics and outcomes were compared between patients who required dialysis for AKI (D-AKI) and those who did not in order to evaluate the impact of D-AKI on long-term mortality and major adverse kidney events.ResultsOf the 3251 patients, 54.1% had D-AKI. Compared with the patients without D-AKI, those with D-AKI had higher rates of all-cause mortality (52.3% vs. 33.3%; adjusted hazard ratio [aHR] 1.82, 95% confidence interval [CI] 1.53–2.17), chronic kidney disease (13.7% vs. 8.1%; adjusted subdistribution HR [aSHR] 1.66, 95% CI 1.16–2.38), and end-stage renal disease (5.2% vs. 0.5%; aSHR 14.28, 95% CI 4.67–43.62). The long-term mortality of patients who survived more than 90 days after discharge was 22.0% (153/695), 32.3% (91/282), and 50.0% (10/20) in the patients without D-AKI, with recovery D-AKI, and with nonrecovery D-AKI who required long-term dialysis, respectively, demonstrating a significant trend (Pfor trend <0.001).ConclusionAKI is associated with an increased risk of long-term mortality and major adverse kidney events in adult patients who receive ECMO.
Highlights
Extracorporeal membrane oxygenation (ECMO) has become a crucial technique for circulatory and respiratory support in intensive care over the past 2 decades
Characteristics and outcomes were compared between patients who required dialysis for Acute kidney injury (AKI) (D-AKI) and those who did not in order to evaluate the impact of D-AKI on long-term mortality and major adverse kidney events
Compared with the patients without D-AKI, those with D-AKI had higher rates of all-cause mortality (52.3% vs. 33.3%; adjusted hazard ratio [aHR] 1.82, 95% confidence interval [CI] 1.53–2.17), chronic kidney disease (13.7% vs. 8.1%; adjusted subdistribution HR [aSHR] 1.66, 95% CI 1.16–2.38), and end-stage renal disease (5.2% vs. 0.5%; aSHR 14.28, 95% CI 4.67–43.62)
Summary
Extracorporeal membrane oxygenation (ECMO) has become a crucial technique for circulatory and respiratory support in intensive care over the past 2 decades. ECMO is an efficacious tool for bridging to organ recovery or transplantation when conventional management fails in cases of cardiogenic shock, respiratory failure, trauma of the respiratory system, and extreme hypothermia.[1,2,3,4] The application of ECMO is limited by its complications, including bleeding, stroke, infection, fasciotomy, amputation, massive blood transfusion, and acute kidney injury (AKI). Of these ECMO-related complications, AKI is the one most significantly associated with in-hospital mortality.[5].
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