Which of the following is the mechanism of action of Fondaparinux?: (A) Factor Xa inhibition and Thrombin inhibition, (B) Factor Xa inhibition, (C) Antithrombin inhibitor, (D) Thrombin inhibition
Answer is B. The antithrombotic activity of fondaparinux sodium is the result of antithrombin III (ATIII) mediated selective inhibition of Factor Xa.