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 ?
In our study only 9 patients were advised the use of peak flow meter at home.
First, the maximum peak flow was different between 1959 and 1981; the difference was an increase of nearly 50%.
"Patients should conduct daily monitoring of their lung function through tools such as peak flow meters, which help to gauge the strength of a patient's lungs for the day and whether the patient will be susceptible to an attack during the day.
In this study, soil and topographic maps of 1:50,000 scales acquired from Watershed Management Organization of Tehran, hydrological data (daily and hourly peak flow of floods) and recorded daily and hourly rainfalls in interior and exterior stations were used.
Figure 1 shows Tracy's weekly asthma medication adherence and peak flow. During baseline, Tracy's medication adherence was six out of a maximum of 14.
Start by finding your best peak flow while your asthma is under control.
Work with your child's asthma specialist or paediatrician to develop an 'Asthma Management Plan', to be given to the staff at your child's school, with information on early warning signs of an asthma episode, what medications the student uses and how they are taken, how to help the child minimise their exposure to triggers and when to contact the child's physician or emergency room.School personnel should also know how to use devices to deliver asthma medications and how to use a peak flow metre (a special device to measure the airways obstruction).
He explains watersheds, soils, and rainfall, travel time, runoff depth and peak flow and then describes ways of understanding and dealing with stormwater in the field, including the use of hydrographs, routing methods, drainage conveyance and control, and because trouble never runs by itself, multiple-event detention design.
After careful analysis, the system is configured to the level of contaminants and peak flow rate ensuring proper treatment.
A respiratory therapist measures her peak flow expiratory flow rate.
And those asthmatic children in special education were significantly more likely to be low-income and to have been hospitalized in the previous year and less likely to use a peak flow meter--an asthma medical device--than asthmatic children in the general population.
In general, lung function increased, peak flow increased, and the number of days with restricted activities decreased as did number of absences from schools.