In trauma care, when should tranexamic acid (TXA) be administered for maximum effectiveness?

In trauma care, when should tranexamic acid (TXA) be administered for maximum effectiveness?

• A. Within 3 hours of injury
• B. Within 1 hour of injury
• C. Within 6 hours of injury
• D. Within 24 hours of injury

Answer: (B)

Early administration of tranexamic acid is most effective because it quickly halts fibrinolysis and stabilizes forming clots during the initial bleeding surge after injury. The strongest impact on survival comes from giving TXA within the first hour; evidence shows the largest mortality reduction when started within 60 minutes. While there can be some benefit if given later, the advantage diminishes with time and is minimal or even potentially harmful after a few hours. So, to maximize effect, TXA should be given as soon as possible, ideally within one hour of injury.

Early administration of tranexamic acid is most effective because it quickly halts fibrinolysis and stabilizes forming clots during the initial bleeding surge after injury. The strongest impact on survival comes from giving TXA within the first hour; evidence shows the largest mortality reduction when started within 60 minutes. While there can be some benefit if given later, the advantage diminishes with time and is minimal or even potentially harmful after a few hours. So, to maximize effect, TXA should be given as soon as possible, ideally within one hour of injury.