Tromboelastometría ROTEM? delta vs. tromboelastografía clásica y pruebas tradicionales de hemostasia

摘要

Thromboelastometry (TEM) and thromboelastography (TEG) describe the interaction between coagulation factors, fibrinogen, platelets and fibrinolytic system in real time by the evaluation of the kinetic and viscoelastic characteristics of the clot. The objectives of the study were to correlate TEM with TEG parameters, and with prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen and platelet count. A comparative population of 27 TEM-TEG samples was studied and of TEM-classical coagulation tests of 141 samples from patients with different pathologies, under anticoagulant treatments and surgical procedures. The TEMograms were: Tromboelastometry ROTEM? delta (Tem International GmbH) with INTEM reactants (ellagic acid + Ca2+), EXTEM (tissue factor + Ca2+) and FIBTEM (EXTEM with platelet inhibitor); reactant TEG: Cl2Ca, Tromboelastograph (D Hellige). PT were performed (% activity), APTT (sec) and Fibrinogen (mg/dL) with HemosIL (Instrumentation Laboratory) and ACL TOP coagulometers. The Pearson Test was used (IBM,SPSS 22). The following correlations were obtained: Very good: a) TEM and TEG amplitudes, r=0.879 and 0.843, p<0.001, for EXTEM and INTEM, b) FIBTEM amplitudes with Fibrinogen r=0.912, p<0.001, c) coagulation times (reaction) and clot formation (20 mm amplitude), INTEM and TEG r=0.918 and 0.919, p<0.001, d) Maximum Lysis EXTEM and TEG r=0.937, p<0.001; and Moderate: a) clot formation EXTEM and TEG r=0.782 p<0.001; b) fibrinogen and platelet amplitudes, r=0.718 and 0.611, p<0.001 for EXTEM, 0.680 and 0.545, p<0.001 for INTEM; c) coagulation time INTEM and APTT r=0.693, p<0.001. TEM and TEG parameters correlate very well, except for the coagulation time with EXTEM and TEG, given they use a different principle to activate coagulation. The analysis of the classic tests confirmed the high correlation between FIBTEM amplitudes and the levels of fibrinogen and a better correlation between INTEM coagulation times with APTT than those of EXTEM with TP.