Classical measures of coagulopathy, such as PT/INR and aPTT, which are warmed to standard body temperature (37
C) before analysis, may falsely normalize results and lead to underdiagnosis of coagulopathy. These tests do not address platelet dysfunction caused by medications, hypothermia, or fibrinolysis, further underestimating coagulopathy. In fact, several studies that reported clinically evident coagulopathy found that these traditional laboratory values correlate poorly with clinical evidence of medical bleeding in humans and animals.
Additionally PT, aPTT, and complete blood cell counts often require 30 minutes to more than an hour before results are available, potentially delaying treatment of trauma-related coagulopathy.
These limitations of traditional measures of coagulopathy have led to a resurgence in the use of alternative measures of clotting and clot strength, including TEG or ROTEM. TEG and ROTEM work similarly and measure the viscoelastic properties of a patient’s blood sample. TEG/ROTEM have the benefit of rapidly providing detailed information on clot formation and strength, and are run at patient temperatures, potentially improving accuracy in diagnosing coagulopathy. In the resuscitation of trauma patients in severe hemorrhagic shock, TEG/ROTEM can have 2 potential applications: results drawn at admission can be used to predict and trigger MTPs, and serial results can be used to direct ongoing blood component therapy. Persuasive evidence
Classical measures of coagulopathy, such as PT/INR and aPTT, which are warmed to standard body temperature (37C) before analysis, may falsely normalize results and lead to underdiagnosis of coagulopathy. These tests do not address platelet dysfunction caused by medications, hypothermia, or fibrinolysis, further underestimating coagulopathy. In fact, several studies that reported clinically evident coagulopathy found that these traditional laboratory values correlate poorly with clinical evidence of medical bleeding in humans and animals.Additionally PT, aPTT, and complete blood cell counts often require 30 minutes to more than an hour before results are available, potentially delaying treatment of trauma-related coagulopathy.These limitations of traditional measures of coagulopathy have led to a resurgence in the use of alternative measures of clotting and clot strength, including TEG or ROTEM. TEG and ROTEM work similarly and measure the viscoelastic properties of a patient’s blood sample. TEG/ROTEM have the benefit of rapidly providing detailed information on clot formation and strength, and are run at patient temperatures, potentially improving accuracy in diagnosing coagulopathy. In the resuscitation of trauma patients in severe hemorrhagic shock, TEG/ROTEM can have 2 potential applications: results drawn at admission can be used to predict and trigger MTPs, and serial results can be used to direct ongoing blood component therapy. Persuasive evidence
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