An electronic peak flow meter is efficient to tells your Asthma conditions in our daily Asthma managment. With the parameter of PEF and FEV1. Your peak flow average is also the standard A peak flow meter tests PEF and FEV1.It tells you how well your lungs are and how well your disease is controlled. PEF is the parameter to be used for diagnose Asthma,which is easy to be supervised with a peak flow meter. FEV1 is measured to know is the airway is obstructive,also an effective basis for monitoring Asthma, but it can’t be get from a manual peak flow meter, rather than achieving from a spiromter. The Asthma measurements are the the basis we used to control our Asthma at home and for healthcare providers to know the personal condition and flare-ups possibility in a certain period, which supplies the basis for disease control and Asthma medication changes.
ERS analyzed and estimated the efficiency of detecting asthmatics changes between FEV1 and PEF,
by the comparisons with two groups of people using several digital peak flow meters for the data measuring.
peakflowmeters.com quoted the Article from ERS here for sharing the information, not for any profits and purposes.
Kerry-Anne Dennis, Vicky Moore, Cedd Burge, Sherwood Burge
European Respiratory Journal 2011 38: p4946; DOI:
Methods: 94 asthmatics from the USA and 84 from the UK were studied. The USA group used the Easyone and the UK group the Piko-1, Vitalograph 2110, or Mini Wright Digital meter. Records contained ≥ 4 readings per day for ≥ 2 weeks with the occupational asthmatic records also having ≥ 10 day shifts. Within session PEF and FEV1 variation was assessed for the USA data (as the meter logged the 3 best attempts) using a coefficient of variation (COV). Diurnal variation% predicted (DV) was analysed for all data. Timepoint analysis (an Oasys program scoring system for occupational asthma) was performed on occupational asthmatics.
Results: The table below compares COV and DV for PEF and FEV1 (SD=standard deviation).
There was no significant difference in the number of day shift positive drops (from Timepoint analysis; a drop signifies a significant difference between work and rest) between FEV1 and PEF (p=0.859) and no difference in the value required to produce a positive drop (p=0.297).
Conclusion: Diurnal variation is significantly greater for PEF than FEV1 in asthmatics with similar within session variation using logging meters incorporating some quality control. PEF is as good as FEV1 for diagnosing (occupational) asthma.
- © 2011 ERS
