• Br J Anaesth · Sep 2017

    Observational Study

    Assessment of standard laboratory tests and rotational thromboelastometry for the prediction of postoperative bleeding in liver transplantation.

    • T M Dötsch, D Dirkmann, D Bezinover, M Hartmann, J W Treckmann, A Paul, and F H Saner.
    • Department of General, Visceral, and Transplant Surgery.
    • Br J Anaesth. 2017 Sep 1; 119 (3): 402-410.

    BackgroundPerioperative bleeding remains a major challenge in liver transplantation. We aimed to compare standard laboratory tests with thromboelastometry (ROTEM ® ) with regard to their ability to predict postoperative non-surgical bleeding.MethodsData from 243 adult liver transplant recipients from January 2012 to May 2014 were evaluated retrospectively. Upon admission to the intensive care unit, coagulation status was assessed using standard laboratory tests [prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen concentration, and platelet count] and ROTEM ® whole blood coagulation assays. Bleeding was defined as transfusion of ≥ 3 units of red blood cells or reoperation for non-surgical bleeding within 48 h after transplantation. Coagulation test results were analysed using receiver operating characteristics (ROC) in order to identify variables predictive of postoperative bleeding. Coagulation management was based on ROTEM ® -guided factor concentrate treatment.ResultsThe overall incidence of bleeding was 12.3% ( n =30). Twenty-three (9.5%) patients underwent reoperation and seven (2.9%) received ≥3 units of red blood cells and non-operative management. Standard laboratory tests predictive of postoperative bleeding were aPTT and PT [area under the ROC curve (AUC) 0.688 and 0.623, respectively]. Tests predictive of bleeding with ROTEM ® were CT EXTEM , CFT INTEM , A10 FIBTEM , and MCF FIBTEM , with AUCs of 0.682, 0.615, 0.615, and 0.611, respectively. Fibrinogen concentration, platelet count, and other ROTEM ® variables failed to demonstrate predictive value for postoperative bleeding (AUC <0.6). Dialysis-dependent kidney failure, 30 day mortality, and median model for endstage liver disease score were all significantly higher in bleeding patients.ConclusionsAlthough both postoperative standard laboratory tests and ROTEM ® assays could identify patients at risk for postoperative bleeding, ROTEM ® assays demonstrated a greater predictive value for impaired fibrinogen polymerization-related coagulopathy.© The Author 2017. Published by Oxford University Press on behalf of the British Journal of Anaesthesia. All rights reserved. For Permissions, please email: journals.permissions@oup.com

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