peak expiratory flow


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Related to peak expiratory flow: forced vital capacity

peak ex·pi·ra·to·ry flow

the maximum flow at the outset of forced expiration, which is reduced in proportion to the severity of airway obstruction, as in asthma.

peak expiratory flow

the greatest rate of airflow that can be achieved during forced expiration, beginning with the lungs fully inflated. Also called peak expiratory flow rate.

peak ex·pi·ra·to·ry flow

(PEF) (pēk ek-spīră-tōr-ē flō)
Maximum flow at the outset of forced expiration, which is reduced in proportion to the severity of airway obstruction, as in asthma.

peak ex·pi·ra·to·ry flow

(pēk ek-spīră-tōr-ē flō)
Maximum flow at outset of forced expiration, which is reduced in proportion to severity of airway obstruction, as in asthma.
References in periodicals archive ?
Two European studies have reported that airborne iron was possibly associated with a decline in peak expiratory flow rate (PEFR), production of phlegm, or exacerbation of respiratory symptoms (Dusseldorp et al.
Peak expiratory flow rates should not be used for the diagnosis or staging of COPD.
The researchers recorded the best of three peak expiratory flow measurements taken before and after the OMT or sham procedure.
The team found that lead and manganese were linked with significant reductions in peak expiratory flow rate, regardless of whether a child had either of the tested gene polymorphisms.
It has been hypothesised that a higher peak expiratory flow rate, tidal volume and airway pressure would be more efficient in secretion removal and reversing atelectasis in an intubated patient (Kim et al 1986, King et al 1992, Maxwell and Ellis 1998).
Conclusions: Peak expiratory flow was the most important predictive value for determining the risk of death in patients who required hospitalization for acute exacerbation of chronic obstructive pulmonary disease.
Guidelines developed for asthma based on pulmonary function testing and peak expiratory flow (PEF) monitoring have gained widespread professional acceptance.
PHT also will demonstrate the latest capabilities in seamless ePRO integrations with Peak Expiratory Flow (PEF) and glucose measurement devices and other eClinical Systems.
studied the effects of 8 wk of EMST in persons with MS and found that following 4 wk of detraining, no significant decrease in MEP was found and peak expiratory flow for cough remained significantly above baseline [5].
The most commonly reported AEs were asthma, peak expiratory flow (PEF) rate decrease, nasopharyngitis and headache.
Nelson and his coworkers showed in a 544-patient, 16-week randomized trial that patients homozygous for arginine at codon position 16 of the beta-2 adrenergic receptor did not have worse morning peak expiratory flow than those with other genotypes.
The current standard practice for diagnosis, management and monitoring of asthma patients are peak expiratory flow (PEF) measurements, pulmonary function tests and clinical symptoms.