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peak expiratory flow rate

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peak expiratory flow rate (pēkˑ ek·spīˑ·r·tōrˈ·ē flōˑ rātˑ),
n a simple, preliminary test that measures the maximum volume of air exhaled by the patient to assess degree of respiratory restriction.
peak expiratory flow rate
Maximum expiratory flow, peak flow The greatest rate of airflow that can be obtained during forced exhalation, which follows a diurnal pattern of fluctuation and can be used clinically to evaluate airway tone; PEF is ↓–and airway tone ↑ in various forms of asthma; it can be plotted during the day and used to investigate occupational asthma and detect exacerbation before the onset of Sx. See Pulmonary function tests.
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In a large metaanalysis of double-blind, placebo-controlled clinical trials of nedocromil sodium, the drug demonstrated a significant effect compared with placebo on outcome variables of daytime and nighttime asthma symptoms, cough, peak expiratory flow rate, FEV1, inhaled bronchodilator use, and patient report of control.
Clinical application of nonsteroidal agents by Gardenhire, Doug / FOCUS: Journal for Respiratory Care & Sleep Medicine
6,14) Peak expiratory flow rates (PEF) have not been validated for the diagnosis of COPD and underestimate the degree of airflow obstruction.
COPD is a common lung disease that requires the correct diagnosis for ... by Black, Andrew / CME: Your SA Journal of CPD
And it was found that there was a statistically significant change in the number of lower respiratory tract symptoms for asthmatic patients compared with non-asthmatic patients, although no effect was observed on peak expiratory flow rates after cleaning between the groups.
Cleaning homes could be harmful for asthmatic women by Asian News International
 
 
 
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