منابع مشابه
Peak expiratory flow (PEF) monitoring.
T he Wright peak expiratory flow meter was introduced in 1959 and provided a portable piece of equipment for assessing some aspects of lung function in the ambulatory care setting. The original device has been supplanted by the mini Wright peak flow meter (and a range of other devices) which have become relatively cheap but are reasonably reliable for home monitoring. So, with an available devi...
متن کاملRe. Calibration of peak expiratory flow (PEF) measuring devices.
There are increasing numbers of devices coming onto the market for measuring PEP and of papers assessing their performance. In these papers a number of different ways of calibrating the devices have been used, as discussed in your correspondence columns [1]. What is the best way to calibrate a peak flow (PP) meter for clinical use? It seems not to be realized that compared with a large pneumota...
متن کاملPeak expiratory flow monitoring in asthmatic children.
OBJECTIVE To correlate forced expiratory volume in 1 second (VEF(1)) and peak expiratory flow (PEF) with clinical parameters in children with moderate and severe asthma. METHODS This was a non-concurrent cohort study, carried out at a pediatric pneumology clinic, in Belo Horizonte, MG, Brazil, between March and October 2002. The study enrolled children aged 5 to 16 years, with persistent asth...
متن کاملPeak expiratory flow at altitude.
The mini Wright peak flow meter is a useful, portable instrument for field studies but being sensitive to air density will under-read at altitude. True peak expiratory flow will increase at altitude, however, because of the decreased air density, given that dynamic resistance is unchanged. The effect of simulated altitude on peak expiratory flow (PEF) was determined in six subjects with both th...
متن کاملDetermination of peak expiratory flow.
It is still unknown whether peak expiratory flow (PEF) is determined by "wave speed" flow limitation in the airways. To investigate the influences of airway mechanical properties on PEF, five healthy adults performed maximal forced expiratory effort (MFEE) manoeuvres, in the standard manner and following breathholds at total lung capacity (TLC) of 2 s and 10 s. Oesophageal pressure (Poes) was m...
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ژورنال
عنوان ژورنال: Thorax
سال: 2004
ISSN: 0040-6376
DOI: 10.1136/thx.2004.027029