Which of the following is a sign of thrombotic events in a patient?

The presence of petechiae and ecchymosis can indicate vascular issues, including thrombotic events. Thrombotic events can lead to conditions such as thrombocytopenia or other clotting disorders that impair the normal function of blood vessels. When these conditions arise, small capillaries may become fragile and rupture, leading to the formation of petechiae—tiny red or purple spots on the body caused by bleeding under the skin.

Ecchymosis, on the other hand, refers to larger areas of bleeding under the skin, often resulting from the rupture of larger blood vessels. Both petechiae and ecchymosis can thus represent signs of underlying thrombotic processes or the effects of anticoagulant therapy, where the risk of bleeding is increased.

The presence of edema, while indicative of various conditions such as heart failure, venous obstruction, or renal issues, is not specifically a sign of thrombotic events in itself. Thus, when considering the specific indicators of thrombosis, the combination of petechiae and ecchymosis provides a clearer picture of potential thrombotic complications.