Least (A-V )O2 difference is seen in
Histotoxic hypoxia Cause Decreased ability of cell to use O2 Examples Cyanide poisoning PaO2 Normal Hb content Normal Aerial O2 content or %O2 saturation Normal A-V PO2 difference Decreased Peripheral chemoreceptor stimulation Present (toxin prevents chemoreceptor to use oxygen) Cyanosis Present
Hypoxic hypoxia
Anemic hypoxia
Stagnant hypoxia
Histotoxic hypoxia
Respiratory System Pa 3