Predictive normal values have been calculated for women and men of different ages and heights, and have been adapted (with agreement from the original authors) for use with the new eu scale en 23747 peak flow meters.
Peak expiratory flow rate - normal values for use with euen13826 scale pef meters only adapted by clement clarke for use with en13826 eu scale peak flow meters from nunn aj gregg i, br med j 19892981068 -70 in me n, readings up to 100 lmin lower than predicted are within normal limits.
Guide to asthma appendix 2 tables of normal peak flow values note that the values shown are the average normal values for healthy persons of a given age and height. There will always be a range of normal values not everyone can be expected to have exactly the same value. Men can have peak flow values as low as 100 litersminute less.
Adapted by clement clarke for use with peak flow meters from nunn & gregg br med j 1989289 1068-70 peak expiratory flow rate normal values in men, readings up to 100 lmin lower than predicted are.
For your peak flow scores to be really useful, you need to check your peak flow twice a day, every day to get a useful pattern of results. Use your peak flow meter before you take your asthma medicine otherwise it will change the score.
The estimatedexpected peak expiratory flow (peak flow) quantifies asthma exacerbation severity. The estimatedexpected peak expiratory flow (peak flow) quantifies asthma exacerbation severity.
The peak expiratory flow rate is the maximal rate that a person can exhale during a short maximal expiratory effort after a full inspiration. The peak expiratory flow prediction tool can calculate peak expiratory flow based on age and height.
Peak flow monitoring helps measure how much, and when, the airways are changing. Due to the wide range of normal values and high degree of variability, peak flow is not the recommended test to identify asthma. A small proportion of people with asthma may benefit from regular peak flow monitoring.
A peak flow test involves blowing as hard as you can into a small handheld device called a peak flow meter. These are available on prescription or can be bought from most pharmacies. By measuring how fast youre able to breathe out, your peak flow score can indicate whether your airways are narrowed.
Peak flow meters for monitoring your pefr are usually recommended for adults and children who are 5 years old or older and have moderate to severe asthma, or in cases where your symptoms arent under control and youre having your medication adjusted. That said, anyone with asthma can use one it just might not be particularly helpful if you have mild asthma and arent on daily medication.