What is the adult TXA dose regimen as listed?

What is the adult TXA dose regimen as listed?

• A. 1 g IV bolus
• B. 2g in 100ml, 10 drop set, 3 drops per second over approximately 5 min
• C. 4 g in 100 ml over 10 minutes
• D. 0.5 g in 100 ml over 5 minutes

Answer: (B)

The question tests how the listed material specifies the adult TXA dosing regimen, emphasizing a rapid loading dose to quickly achieve therapeutic levels during active bleeding. The regimen described is 2 grams of tranexamic acid given in 100 milliliters, delivered through a standard IV line with a drop set of 10 drops per milliliter, at about 3 drops per second for roughly five minutes. This setup provides a fast infusion to raise blood levels promptly, aiming to inhibit fibrinolysis early when bleeding risk is highest. The mechanism is that TXA blocks the breakdown of clots by inhibiting plasmin formation and activity, helping to stabilize formed clots and reduce ongoing bleeding. While other dosing schemes exist in different guidelines, the option listed matches the specified adult loading dose and infusion rate. The remaining options differ in total dose or infusion duration and therefore do not align with the described regimen.

The question tests how the listed material specifies the adult TXA dosing regimen, emphasizing a rapid loading dose to quickly achieve therapeutic levels during active bleeding. The regimen described is 2 grams of tranexamic acid given in 100 milliliters, delivered through a standard IV line with a drop set of 10 drops per milliliter, at about 3 drops per second for roughly five minutes. This setup provides a fast infusion to raise blood levels promptly, aiming to inhibit fibrinolysis early when bleeding risk is highest. The mechanism is that TXA blocks the breakdown of clots by inhibiting plasmin formation and activity, helping to stabilize formed clots and reduce ongoing bleeding. While other dosing schemes exist in different guidelines, the option listed matches the specified adult loading dose and infusion rate. The remaining options differ in total dose or infusion duration and therefore do not align with the described regimen.