Routine practice to detect trauma induced coagulopathy has
been by various parameters like INR (International Normalized
Ratio), APTT (Activated Partial Thromboplastin Time),
platelet counts and fibrinogen levels.
APTT and INR >1.5 times are considered as indicators of
coagulopathy as it is often assumed that the conventional
coagulation screens (INR and APTT) monitor coagulation;
however, these tests monitor only the initial phase of blood
coagulation and represent only the first 4% of thrombin production.
12 It is therefore possible that the conventional coagulation
screen appears normal, while the overall state of blood
coagulation is abnormal. Another important short coming of
the standard coagulation tests is that these tests are time
consuming. Median turnaround time of 78e88 min has been
reported in various studies