2/12/2024 Chemicals that can be added to a new tank to force it to cycle within a much shorter period of timeRead NowThis overview describes the various technologies applied to maintaining a safe breathing environment. On the medical side, mechanisms for assisting breathing include O 2 supplementation at ambient pressure, positive pressure/flow without additional O 2, or a combination of both. On the environmental side there are two conditions to be addressed: toxicity of the surrounding atmosphere and changes in external pressure and O 2 concentration. When more challenging external environmental conditions or pulmonary illnesses exceed the capability for these adaptations, the human system requires technology to maintain sufficient ventilation to preserve life. Longer term adaptations for exercise and altitude include increases in red blood cell counts and higher concentrations of capillaries in muscle tissue. The body automatically adjusts for stress, exercise, altitude, and mild disease by increasing the volume and frequency of breathing. Normal breathing for healthy humans is taken for granted it occurs without conscious effort using ambient (1-atmosphere) pressure with 21% oxygen (O 2) concentration.
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