Predictive Normal Values (Nomogram, EU scale)
The change in scale for peak flow meters will result
in PEF readings that are different, depending on whether the individual has used
a Wright scale meter, or the new EU scale meter.
Sometimes, it is useful for health
professionals to have a guide as to what peak flow could be expected from each
individual, if they didn't have asthma.
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.
As a general rule, if your average
reading is frequently one-third or more below your best it may mean that your
asthma is not controlled.
If you ever have difficulty breathing
or cannot obtain relief with a reliever inhaler, you should seek emergency help.
Download the Adult Normal Values chart
: 52 Kb
Download the Paediatric Normal Values Chart
: 180 Kb
You will require Adobe Reader to view pdf files -
download it here