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 ?
This is often associated with anxiety, but can develop into a long-term habit thought to affect asthma in three different ways - first, people who hyperventilate tend to breathe through their mouths rather than their noses.
She was led to a room to be breathalysed but the panicking mum started to hyperventilate and was unable to give a sample, Perth sheriff court heard.
The sufferer may blush, tremble, sweat, hyperventilate, have a racing heart or be so scared they can barely speak.
I can tell from your description that your fear makes you over-breathe, or hyperventilate, and that will only increase your panic as you'll feel dizzy, even sick.
Physical symptoms include those of a normal panic attack but sufferers can also hyperventilate, breathing so fast that they can't inhale their normal level of oxygen.
Ozzy adds: "I hyperventilate opening a box of chocolates.
When some girls with asthma began to hyperventilate in panic, the teacher ordered other students to remove ceiling tiles to let in more air.
Ivette added that Arceli hyperventilates when she is stressed out but has not experienced nose bleeds in the past.
While Joe McElderry admitted he hyperventilates before he goes on, but then puts his nerves into his performance.
But the librarian's eyes bug out and she hyperventilates, almost crying.
This was nothing less than "a terror plan that made Osama bin Laden's look rinky-dink," hyperventilates Kristof -- missing the point that local law enforcement foiled this grand scheme in timely fashion.
Keeler hyperventilates just looking at photos of mice.

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