How is the mechanism of an infarct?

Ischemia leads to anoxia lead to anaerobic glycolysis, no glycogen, oxidative phosphorylation stops, no ATP, K+ go out and Ca2+ become intracellular, phospholipase activity increase, membrane damage permits water entry to cells, then necrosis of epithelia by release of lysosomal enzymes, leading to cell death (apoptosis)