or FEV1 measurements help them monitor your lung function and how well treatments are
working.
2. DETERMINING YOUR PEF OR FEV1 BASELINE VALUE
A PEF or FEV1 measure with a high value usually means that your airflow is good.
The best way to determine what is a healthy PEF or FEV1 for you is to discuss this with
your physician or other licensed healthcare professional. In fact the importance of any
changes in airflow from one measuring to the next depends upon how much they are
different from your baseline value you should reach when you are in healthy physical
condition.
Your physician or other licensed healthcare professional will use one of two possible ways
to identify your baseline value. The first method adopts the predicted value calculated
according to the results of epidemiological studies of large groups of healthy subjects of
your same age, height, sex, and origin. The second method adopts the personal best value
you can reach when you are in the healthiest physical condition.
The MIR SMART ONE app can calculate the PEF or FEV1 predicted value, i.e. the expected
value for healthy people, depending on age, height, sex, and origin. MIR SMART ONE app
calculate the PEF or FEV1 predicted value that has been endorsed by ATS (American
Thoracic Society): for PEF the predicted values are calculated according to Knudson, R. J.,
Slatin R. C., Lebowitz, M. D., Burrows, B., The Maximal Expiratory Flow-Volume Curve –
Normal Standards, Variability, and Effects of Age, AM REV RESPIR DIS, 1976 113;587-600;
for FEV1 the predicted values are calculated according to GLI-2012 All-Age Multi-Ethnic
Reference Values by Philip H. Quanjer, Sanja Stanojevic, Janet Stocks, Tim J. Cole.
In this case, the predicted value becomes the baseline value for your treatment plan. If
your physician or other licensed healthcare professional prefers this method, MIR SMART
ONE app provides the calculation of the predicted PEF or FEV1 value.
It is important to know that these predicted values are average numbers for large groups
of people. You may have a higher PEF or FEV1 measures than the predicted value and you
may not be healthy. Or you may have a lower PEF or FEV1 than the average and be
healthy.
