Definition

• a state of oxygen deficiency in the body 
• reduced barometric pressure(higher altitude) reduces the concentration of oxygen in each breath
• medication, carbon monoxide, anemia, extreme hot&cold, fever, drugs, alcohol and anxiety increase the body’s need for oxygen  
• if we do not get sufficient oxygen, symptoms occur, followed by unconsciousness before die 

Symptoms

• Cyanosis 
• Headache 
• Euphoria 
• Drowsiness 
• Decreases reaction time 
• Impaired judgement 
• Visual impairment 

Treatment

• fly at lower altitude
• use the supplemental oxygen
• land at the nearest airport
• seek medical help

Four types of Hypoxia

• Hypoxic hypoxia – inadequate supply of oxygen to the body. 
• Hypemic hypoxia – inability of blood to carry oxygen(smoking ) 
• Stagnant hypoxia – inadequate circulation of oxygen(cold temp) 
• Histotoxic hypoxia – Inability of the cells to use oxygen effectively (alcohol)