Types of Hypoxia

Type of hypoxia	Pathophysiology	Arterial PO2	O2 content of arterial blood	Examples
Anemic Hypoxia	Due to reduced O2 carrying capacity	Normal	Reduced	Anemia (Reduced RBC, Reduced Hb) CO poisoning
Hypoxic Hypoxia	Inadequate gas exchange	Reduced	Reduced	High altitude Respiratory disease
Histotoxic Hypoxia	Inability of cells to utilize available O2	Normal	Normal	Cyanide poisoning
Stagnant Hypoxia	due to slow circulation	Normal	Normal	Circulatory Shock Congestive heart failure