Table 1: Evaluated Parameters of Thromboelastography Versus Rotational Thromboelastometry Testing.
Clot phase | Measurement | TEG | ROTEM |
---|---|---|---|
Initiation | Time from start to 2 mm clot length | Reaction time | Clot time |
Kinetics | Time from 2 mm to 20 mm clot length | Clot formation time | Clot formation time |
Angle of propagation from 2 mm to 20 mm clot formation | Alpha angle | Alpha angle | |
Strength | Amplitude measured at peak clot strength | Maximum amplitude | Maximum clot firmness |
Calculated from maximum amplitude | G | Maximum clot elasticity | |
Lysis/stability | Percentage of loss of amplitude at fixed time after maximum amplitude | Lysis at 30 min, estimated percentage of lysis | Lysis index at 30 min, maximum lysis |
G = shear elastic modulus parameter; ROTEM = rotational thromboelastometry; TEG = thromboelastography.