A<unk>  is defined as a general or specific failure of the circulation, either cardiac or peripheral in nature. Although the mechanisms, causes and clinical syndromes are different, the pathogenesis is the same—the<unk>  system fails to maintain the supply of oxygen and other nutrients to the tissues and to remove the carbon dioxide and other metabolites from them. The failure may be hypovolemic or distributive. A common cause of this could be shock or trauma from injury or surgery.
Circulatory collapse
Cardiovascular drift
Permissive hypotension
Vasodilatory shock
Parasympathetic rebound
Proarrhythmia
Ischemic cascade
Cerebral softening