• Resuscitation · Aug 2020

    Low hemoglobin and venous saturation levels are associated with poor neurological outcomes after cardiac arrest.

    • Zama Cavicchi Federica F Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium., Enrica Iesu, Federico Franchi, Leda Nobile, Filippo Annoni, Jean-Louis Vincent, Sabino Scolletta, Jacques Creteur, and Fabio Silvio Taccone.
    • Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium.
    • Resuscitation. 2020 Aug 1; 153: 202-208.

    IntroductionHemoglobin (Hb) is a main determinant of tissue oxygen delivery and anemia could be particularly harmful in post-anoxic brain injury. The aim of this study was to evaluate the association of Hb and venous Hb oxygen saturation (SvO2/ScvO2) with long-term neurological outcome in patients admitted after cardiac arrest (CA).MethodsAnalysis of adult CA patients admitted to the Department of Intensive Care of the Erasme University Hospital (Brussels, Belgium) over 9 years. We retrieved all data concerning CA characteristics as well as Hb during the first 48 h since injury as well as the need for red blood cells transfusions (RBCT). Minimum Hb and Hb oxygen saturation values were recorded. Neurological outcome was evaluated 3 months after CA. Unfavorable neurological outcome (UO) was defined as a Cerebral Performance Categories (CPC) score of 3-5.ResultsWe treated 414 patients patients with CA, including 231 (56%) out-of-hospital cardiac arrest (OHCA) and 158 (38%) with an initial shockable rhythm. Median Hb concentration on admission was 12.0 [9.9-13.7] g/dL and the lowest Hb concentration was 10.0 [8.1-11.0] g/dL; 127 patients (31%) received at least one RBCT. Hb oxygen saturation on admission was 67 [59-74]%, while the lowest value was 60 [53-68]%. Low Hb and Hb oxygen saturation values were independently associated with UO; the optimal cut-off to predict UO was <9.9 g/dL and <60%, respectively.ConclusionsLow hemoglobin values and low values of oxygen venous saturation are significantly associated with unfavorable neurological outcome in adult patients resuscitated from cardiac arrest.Copyright © 2020 Elsevier B.V. All rights reserved.

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