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Transfusion requirements in elective cardiopulmonary bypass surgery patients: predictive value of Multiplate and Thromboelastography (TEG) Platelet Mapping Assay

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Vis graf over relationer

Managing haemostasis in patients undergoing cardiopulmonary bypass (CPB) surgery remains a challenge. There is no established laboratory test to predict transfusion requirements in cardiac surgery. We investigated whether preoperative Thromboelastography (TEG) with Platelet Mapping Assay (PMA) or Multiple Electrode Aggrometry (MEA) could predict transfusion requirements in patients undergoing elective coronary artery bypass grafting (CABG) or combined CABG with aortic or mitral valve replacement. We prospectively investigated 199 patients undergoing elective CABG or combined procedures. PMA and MEA were performed at baseline (after anaesthesia induction), upon arrival at the intensive care unit and on the first postoperative day. Patients receiving fresh frozen plasma and/or platelets (FFP/PLT) had a lower PMA maximum amplitude (MA) for adenosine diphosphate (PMA-ADP) and arachidonic acid (PMA-AA) at baseline, at arrival in the intensive care unit and the first postoperative day compared to non-transfused patients. Receiver operating characteristic curves on PMA showed that lower values predicted FFP/PLT transfusion: PMA-ActF 0.64 (p = 0.04), PMA-ADP 0.69 (p = 0.01) and PMA-AA 0.71 (p = 0.002). In contrast, MEA values were not able to predict FFP/PLT transfusions. This study shows that preoperative PMA potentially is a better screening tool for platelet inhibition associated with transfusion requirements in patients undergoing CABG or combined procedures.

OriginalsprogEngelsk
TidsskriftScandinavian Journal of Clinical and Laboratory Investigation
Vol/bind77
Udgave nummer5
Sider (fra-til)345-51
Antal sider7
ISSN0036-5513
DOI
StatusUdgivet - 2017

ID: 50673839