The Impact of Factor Xa Inhibition on Thrombosis, Platelet Activation, and Endothelial Function in Peripheral Artery Disease

The Primary Investigator's central hypothesis is that activation of thrombotic pathways and downstream effectors of factor Xa signaling contribute to the development of PAD and its complications. Aim 1: To assess the impact of rivaroxaban on macrovascular endothelial function in a randomized, double-blind, placebo-controlled crossover intervention in humans with PAD. Aim 2: To assess the impact of rivaroxaban on PAR-1-mediated platelet activation in addition to its pleiotropic effects on thrombosis, thrombolysis, and inflammation in a randomized, double-blind, placebo-controlled crossover intervention in humans with PAD.