Changes

* Ischaemia is the failure or reduction of arterial blood supply to an organ or tissue.   

* Ischaemia is the failure or reduction of arterial blood supply to an organ or tissue.   

*#* Unless there is a good alternative collateral supply, this results in necrosis of tissue.  

*#* Unless there is a good alternative collateral supply, this results in necrosis of tissue.  

*#** Collateral supplies may be inadequate to compensate if the blockage is severe.

*#** Collateral supplies may be inadequate to compensate if the blockage is severe.

*#* This focal type of lesion is known as [[Ischaemia and Infarction - Pathology#Infarction|'''infarction''']].  

*#* This focal type of lesion is known as [[Infarction|'''infarction''']].  

*# '''Incomplete, gradual failure of blood supply'''

*# '''Incomplete, gradual failure of blood supply'''

*#* Results in “accommodation”.

*#* Results in “accommodation”.