l amount falling way below normal.
             Stagnant hypoxia is an oxygen deficiency when there is poor blood circulation or poor blood flow. The blood flow through the capillaries is insufficient to properly supply the tissues. There, the blood itself is normal, but the blood flow is so reduced that there is not enough blood reaching the tissues. Stagnant hypoxia may be general or local. In a general case, it may result from heart disease, impairing the circulation; an impairment of the return of the blood through the veins; or trauma-induced shock. In a local case of stagnant hypoxia, it may be due to any condition that reduces or prevents blood circulation anywhere in the body. Both Raynaud's disease and Buerger's disease are examples of local stagnant hypoxia. Examples of causes of stagnant hypoxia are high "G" forces, prolonged sitting in the same position or hanging in a harness, cold temperatures, and positive pressure breathing. If a person sits in the same position for long hours, such as in a classroom, stagnant hypoxia can be experienced.
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