Thromboelastometry-Based Prophylaxis for Venous Thromboembolism in the Acute Period Following Isolated Severe...

Area of Science:

• Neurotrauma
• Hematology
• Critical Care Medicine

Background:

• Traumatic brain injury (TBI) significantly increases the risk of venous thromboembolism (VTE).
• Determining the optimal timing for VTE prophylaxis in severe TBI patients is crucial for patient safety.

Purpose of the Study:

• To establish the ideal timing for initiating pharmacological VTE thromboprophylaxis in patients with isolated severe TBI.
• To utilize rotational thromboelastometry (ROTEM) for guiding VTE prophylaxis decisions.

Main Methods:

• An observational study involving 115 adult patients with isolated severe TBI within 48 hours of injury.
• Rotational thromboelastometry (ROTEM) was used to assess hypercoagulation, specifically clot density (MCF EXTEM) and fibrinogen levels (MCF FIBTEM).
• VTE chemoprophylaxis initiation timing was correlated with brain CT findings regarding hemorrhagic progression.

Main Results:

• Hypercoagulation, indicated by elevated MCF EXTEM and MCF FIBTEM, was observed in a significant portion of patients by day 7 (85.2%).
• Early VTE chemoprophylaxis initiated on days 3-4 post-TBI did not lead to the progression of hemorrhagic foci in patients.
• ROTEM identified hypercoagulation, suggesting a potential window for intervention.

Conclusions:

• Rotational thromboelastometry (ROTEM) is clinically significant for managing VTE risk in severe TBI.
• Initiating anticoagulant prophylaxis 3-4 days after severe TBI appears safe, with minimal risk of hemorrhagic progression.
• This study provides data to optimize VTE chemoprophylactic strategies in TBI patients, potentially reducing complications.