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maximum expiratory pressure


'maximum expiratory pressure' can also refer to...

 

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A test of cardiorespiratory function in which the subject takes a deep breath and blows as forcibly as possible into a manometer; the highest pressure maintained for at least 3 s is used in the cardiopulmonary index and some other tests of cardiorespiratory endurance. Since expiratory pressure is more or less equal to intrathoracic pressure at an instant in time, when maximum expiratory pressure exceeds systolic pressure, no blood leaves the heart. This results in relative hypoxia and may cause fainting.

Subjects: Sports and Exercise Medicine.


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