Thrombosis,embolism And Infarction Flashcards
What is thrombosis
Intravascular coagulation of blood, leading to interruption of blood flow
What is an embolism
The passage and eventual trapping of an object within the vasculature
What is infarction
Necrosis resulting from ischemia caused by obstruction of blood supply
White infarcts
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
Red infarcts
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.
