peak flow


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peak flow

The maximum volume of air that can be expelled from the lungs during a vigorous exhalation. Its measurement is used to determine the degree of respiratory impairment in patients with obstructive lung diseases.
See also: flow
References in periodicals archive ?
Courtlandt, if you have asthma and get a peak flow rate that is less than 80 percent of your personal best you should take your emergency inhaler medication (Quick acting beta2-agonist).
In most cases, peak flow differences are decreased between simulated and actual (observed) hydrographs.
Careful monitoring of peak flow measurements should be used to help quantify the severity of attacks.
Keywords: asthma, asthma triggers, triggers, peak flow meter, peak flow, symptoms, flare-up, asthma attack, inhaler, lifestyle tips
This type of system combines water quality treatment function with water quantity detention and peak flow control.
The peak flow rate during November's flood--the largest in the Grand Canyon since a similar headline-grabbing event in the spring of 1996--is almost equal to the rate during the average flood that the canyon experienced in the pre-dam era.
Subjects were instructed to record their peak expiratory flow with an Assess Peak Flow Meter each evening.
The new product, the Microlife Peak Flow Monitor, is the first digital peak flow meter that provides FEV-1 measurement.
The youngsters were asked to keep daily diaries in which they recorded acute bouts of asthma and their strength of breath peak flow.
Known as the PiKo Electronic Peak Flow Meter, it allows asthma sufferers to check their condition at home.
A peak flow meter does have a role in asthma management, but spot-checking in the office, other than to evaluate technique, is not helpful.