• C T Anthon, R B Müller, N Haase, P B Hjortrup, K Møller, T Lange, J Wetterslev, and A Perner.
• Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
• Acta Anaesthesiol Scand. 2017 Sep 1; 61 (8): 904-913.

BackgroundThe Scandinavian Starch for Severe Sepsis/Septic Shock (6S) trial showed increased 90-day mortality with hydroxyethyl starch (HES) 130/0.42 vs. Ringer's acetate. To explore the underlying pathophysiology, we compared early changes in plasma cytokine concentrations between patients resuscitated with HES vs. Ringer's acetate.MethodsIn a subgroup of 226 patients from the 6S trial, we calculated delta plasma concentrations of tumour necrosis factor alpha (TNF-α), interleukin (IL)-6 and IL-10 from randomization to day 2. We used multiple linear and logistic regression analyses to assess differences between the groups and associations between delta cytokine concentrations and 90-day mortality, respectively.ResultsBaseline characteristics and day 2 mortality were comparable between the groups. We observed similar delta cytokine concentrations in the HES vs. Ringer's group (mean difference in delta TNF-α: -1.5 pg/ml (95% CI, -4.9 to 1.9), P = 0.39; IL-6: 36.0 pg/ml (-24.1 to 96.1), P = 0.24; IL-10: -3.9 pg/ml (-21.1 to 28.9), P = 0.76). In all included patients, we observed a linear relationship between increases in TNF-α and 90-day mortality (P = 0.005).ConclusionResuscitation with HES 130/0.42 vs. Ringer's acetate did not appear to affect plasma concentrations of TNF-α, IL-6 or IL-10 differently during the first days after randomization into the 6S trial. In the overall cohort, increases in TNF-α were associated with increased 90-day mortality. Although interpretation should be done with caution, it seems unlikely that the increased mortality observed with the use HES in the 6S trial is signalled by early changes in three biomarkers of systemic inflammation.© 2017 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

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