• Jan T Kielstein, Anna Maria Heiden, Gernot Beutel, Jens Gottlieb, Olaf Wiesner, Carsten Hafer, Johannes Hadem, Ansgar Reising, Axel Haverich, Christian Kühn, and Stefan Fischer.
• Division of Nephrology and Hypertension, Department of Internal Medicine, Medical School Hannover, Germany. kielstein@yahoo.com
• Nephrol. Dial. Transplant. 2013 Jan 1; 28 (1): 86-90.

BackgroundExtracorporeal membrane oxygenation (ECMO) is increasingly used in the intensive care unit (ICU) setting to improve gas exchange in patients with acute respiratory distress syndrome as well as in patients pre- and post-heart and lung transplantation. In this clinical setting, acute kidney injury (AKI) is frequently observed. So far, it is unknown how AKI affects the survival of critically ill patients receiving ECMO support and whether veno-veno and veno-arterial ECMO have different effects on kidney function.MethodsThis is a retrospective analysis of patients undergoing ECMO treatment in medical and surgical ICUs in a tertiary care centre. We evaluated all patients undergoing ECMO treatment at our centre between 1 January 2005 and 31 December 2010. Data from all 200 patients (83F/117M), median age 45 (17-83) years, were obtained by chart review. Follow-up data were obtained for up to 3 months.ResultsThree-month survival of all patients was 31%. Of the 200 patients undergoing ECMO treatment, 60% (120/200) required renal replacement therapy (RRT) for AKI. While patients without RRT showed a 3-month survival of 53%, the survival of patients with AKI requiring RRT was 17% (P = 0.001). Longer duration of RRT was associated with a higher mortality.ConclusionsAKI requiring RRT therapy in patients undergoing ECMO treatment increases mortality in ICU patients. Future studies have to clarify whether it is possible to identify patients who benefit from the combination of ECMO and RRT.

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