Which laboratory results are indicative of DIC?

The correct choice reflects the characteristic laboratory findings associated with Disseminated Intravascular Coagulation (DIC). In DIC, a complex and dysregulated process occurs where there is widespread activation of the coagulation cascade, leading to the formation of blood clots throughout small blood vessels, followed by consumption of clotting factors and platelets.

Prolonged PT (Prothrombin Time) and prolonged APTT (Activated Partial Thromboplastin Time) indicate that both the extrinsic and intrinsic pathways of the coagulation cascade are affected. This is consistent with the consumption of clotting factors that occurs in DIC. Furthermore, a decreased platelet count is indicative of thrombocytopenia, which results from the excessive consumption of platelets as they aggregate to form clots.

In summary, the laboratory findings of prolonged PT, prolonged APTT, and decreased platelet count are hallmark indicators of DIC, reflecting the pathophysiological events of excessive coagulation followed by depletion of clotting resources in the body.