The<unk>  <unk><unk>  is a series of biochemical reactions that are initiated in the brain and other aerobic tissues after seconds to minutes of<unk>  (inadequate blood supply). This is typically secondary to stroke, injury, or cardiac arrest due to heart attack. Most<unk>  neurons that die do so due to the activation of chemicals produced during and after<unk> . The<unk>  usually goes on for two to three hours but can last for days, even after normal blood flow returns. __TOC__
Ischemic cascade
Anemic infarct
Reperfusion injury
Ischemia
Vasodilatory shock
Ischemic compression
Cholinergic crisis
Cerebral hyperperfusion syndrome