Thrombosis,embolism And Infarction

Question 1

What is thrombosis

Answer 1

Intravascular coagulation of blood, leading to interruption of blood flow

Question 2

What is an embolism

Answer 2

The passage and eventual trapping of an object within the vasculature

Question 3

What is infarction

Answer 3

Necrosis resulting from ischemia caused by obstruction of blood supply

Question 4

White infarcts

Answer 4

With arterial occlusions

In solid organs

With end-arterial circulation without a dual blood supply (e.g. heart,
spleen, and kidney)

Tissue with increased density, prevents the diffusion of RBCs from capillaries into the necrotic area

Question 5

Red infarcts

Answer 5

In these infarcts red cells ooze into the necrotic area.

They occur characteristically in the lung and GIT.

These tissues are loose, well-vascularised with overlapping blood
supply, a haemorrhage into the infarct tissue occurs.

They can be caused by venous occlusion, e.g. infarcts associated with volvulus or strangulated hernias.