Evaluation of a Newly Implemented Critical Thromboelastography (TEG) Value Callback System

Thromboelastography (TEG) measures whole blood coagulation kinetics in real time and is useful in guiding blood product transfusion. At our institution, providers have immediate remote access to TEG results. However, some critical values are occasionally missed. Our patient blood management program implemented a critical TEG value callback system to improve patient management and blood product utilization.

This retrospective, observational study assessed the data of trauma and critical care patients preimplementation (n = 20) and postimplementation (n = 100) of the callback system. Provider responses to callbacks and changes in TEG parameters after subsequent testing were compared between the two groups.

In response to callbacks, 42% provided appropriate management and 42% ordered a repeat TEG vs 28% and 33% in the historical group (P < .0001 and P = .0002, respectively). Following callback, 90% of the TEG parameters in the study group showed an improvement vs 57% in the control group (P = .011).

The increase in appropriate management and the improvement in TEG parameters upon repeat testing in the study group compared to the control group demonstrate the efficacy of the TEG callback system. Further studies are needed to evaluate the callback system effect on patient outcome.