hyperventilation

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hyperventilation

an increase in the depth, duration, and rate of breathing, sometimes resulting in cramp and dizziness
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

hyperventilation

[¦hī·pər‚vent·əl′ā·shən]
(medicine)
Increase in air intake or of the rate or depth of respiration.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Tobin, Perez, Guenther, Lodato and Dantzker (1987) argued that visual and physical assessment of the rib cage and abdominal movement are insufficient to determine flow during inspiration and expiration, especially in tachypnic patients.
Of all the sounds that have the potential to wake one from a sound sleep few are so terrifying, especially to the new parent, as that of the barking cough and laborious tachypnic breathing of an infant with croup.
Her temperature was 38[degrees]C; she was tachypnic and had a nonproductive cough.