Question

Venous thromboembolism is associated with:

a) Blood vessel wall injury.
b) Excessive platelet aggregation.
c) Increased erythrocyte count.
d) Lymphatic obstruction.

Answer 1

Venous thromboembolism is primarily associated with blood vessel wall injury, leading to the formation of a thrombus that reduces blood flow. While excessive platelet aggregation and increased erythrocyte count contribute to clot formation, vessel damage is the main cause.

Step-by-step explanation:

Venous thromboembolism is associated with blood vessel wall injury. In a damaged or slightly damaged blood vessel, a thrombus (aggregation of platelets, erythrocytes, and even white blood cells) can form, reducing blood flow. Thrombi are most commonly caused by vessel damage that activates the clotting mechanism, as seen in conditions like deep vein thrombosis and atherosclerosis. While excessive platelet aggregation and increased erythrocyte count play a role in clot formation, blood vessel wall injury is the primary factor associated with venous thromboembolism.