hyperventilation

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hyperventilation

an increase in the depth, duration, and rate of breathing, sometimes resulting in cramp and dizziness

hyperventilation

[¦hī·pər‚vent·əl′ā·shən]
(medicine)
Increase in air intake or of the rate or depth of respiration.

hyperventilation

A breathing problem caused by too little carbon dioxide in the lungs. The term hyperventilation means overbreathing, where breathing is in excess of normal requirements of the body. This results in reducing the carbon dioxide (CO2) level of the body that provides the necessary stimulus for breathing. It is associated with anxiety and tension during flying. It can cause dizziness and may even lead to unconsciousness.
References in periodicals archive ?
And by using damper control at the vents, overventilation was prevented when temperature differences were large.
Almost as soon as Standard 90 was published, it exempted health care facilities from both the overventilation and reheat limitations (DeRoos et al.
Eliminate overventilation by limiting HVAC operation to periods when areas are actually occupied.
The MV building had over 30 air changes per hour (ach) due to the overventilation. Even if the ventilation were reduced to 10 L/s per person (21 cfm per person), the ach would be approximately 8 ach.
Using an overly conservative estimate for zone population can result in significant overventilation and excessive energy use.
Since the setpoint considers the full occupancy in the critical zone, overventilation may occur in the critical as well as in the noncritical zones when the actual occupancy is lower than the full design occupancy.
Possible Approach Disadvantages No Reset Overventilation wastes energy.
Designers and building operators also will tend to err on the side of overventilation to avoid potential liability issues.
But, his analysis that overventilation saves energy is flawed.