DSPLYTY wrote:

There are now small digital peak flow meters that measure PEF,
FEV1, store readings, for a reasonable price. See:
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Typical digital electronic peak flow meter[commercial site]:
http://www.quickmedical.com/pulmonarydata/piko1.html
Electronic Peak Flow/ FEV1 Meter  PiKo-1  $29.95
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http://thorax.bmjjournals.com/cgi/content/abstract/56/3/180
Thorax 2001;56:180-182 ( March )

Peak flow diaries in childhood asthma are unreliable

A W A Kamps, R J Roorda, P L P Brand

Department of Paediatrics, Division of Paediatric Pulmonology,
Isala Klinieken, Weezenlanden Hospital, PO Box 10500,
8000 GM Zwolle, The Netherlands

Excerpt:
"BACKGROUND A study was undertaken to investigate the compliance
with and accuracy of peak flow diaries in childhood asthma.
METHODS Forty asthmatic children (5-16 years) were asked to
perform peak flow measurements twice daily for 4 weeks by means
of an electronic peak flow meter and to record values in a
written diary.
...........
CONCLUSIONS Peak flow diaries kept by asthmatic children are
unreliable. Electronic peak flow meters should be used if peak
flow monitoring is required in children with asthma."
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I went ahead and order a electronic Peak flow called Piko-1 for my
daughter.. We love it!! It is easier for her to read..