Hyperventilation Guide, Meaning , Facts, Information and Description
In physiology hyperventilation can mean the following:- Hyperventilation is a state of decreased ratio of carbon dioxide production to alveolar respiration. In this sense it means literally overventilation of the lungs. It can be done voluntarily, by taking excessively deep breaths, for instance. In normal breathing, both the depth and frequency of breaths is varied by the neural system in order to balance the flow of oxygen into the body with the flow of carbon dioxide out of the body. The gasses in the alveoli are nearly in equilibrium with the gasses in the blood. At rest, less than 10% of the gas in the alveoli is replaced each breath. Deeper breaths exchange more of the alvolar gas with air and have the net effect of drawing more carbon dioxide out of the body, since the carbon dioxide concentration in normal air is very low. This respiratory control is the first, most powerful, and most rapid mechanism acting to control body pH. A rise in pH will be countered by retention of carbon dioxide (shallower breaths) until pH is restored by the resulting increase in carbonic acid. The normal person is not consciously aware of this constant regulatory activity. Of course the kidneys are essential to long term regulation, because sulphate and nitrate ions, for instance, can not be gassified, but the kidneys operate on a much slower time scale.
- Hyperventilation is a physical action characterized by increased release of a substance. The term is usually applied to a biological response to stress within the lungs of a living animal.
- It is often used loosely to refer to attacks of the hyperventilation syndrome, characterized by deep breathing, chest pain, and altered sensations of the fingers and lips.
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