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Adapted by Clement Clarke for use with peak flow meters from Nunn & GreggBR Med j 1989:289; 1068-70
Peak Expiratory Flow RateNormal Values
In men, readings up to 100 L/min lower than predicted arewithin normal limits. For women, the equivalent figure is 85 L/min.
Values are derived from Caucasian populations.
MenHeight
Age-Years
152025303540455055606570758085
PEF L/min EU Scale
485540575594601599590575557536513490466442418
` `̀1.6m - 5 3
PEF L/min EU Scale
498555591611618615606591572550527503478453429
` `̀1.67m - 5 6
PEF L/min EU Scale
511571608628636633623608588566542517491465440
` `̀1.75m - 5 9
PEF L/min EU Scale
524586624645653650640624603581556530503477451
`1.83m - 6
PEF L/min EU Scale
535598637659666664653637616593567541514487460
` `̀1.90m - 6 3
Women1.75m - 5 91.52m - 5
PEF L/min EU Scale
394419433437436431422411399385371356342327313
` `̀1.60m - 5 3
PEF L/min EU Scale
385409422427425420412401389376362348334320306
PEF L/min EU Scale
402428441446445439431419407393378363348334319
1.67m - 5 6
PEF L/min EU Scale
411437451456454449440428415401386371355340325
PEF L/min EU Scale
418445459465463457448436423408393378362346331
Height
Age-Years
152025303540455055606570758085
`` ` `̀ ` `̀ 1.83m - 6
Peak Expiratory Flow RatePaediatric Normal Values
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
Height(m)
4’3”
4’5”
4’7”
4’9”
4’11”
5’1”
5’3”
5’5”
5’7”
Height(ft)
212
233
254
276
299
323
346
370
393
Predicted EUPEFR (L/min)
Height(m)
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
87
95
104
115
127
141
157
174
192
Predicted EUPEFR (L/min)
2’9”
2’11”
3’1”
3“3”
3’5”
3’7”
3’9”
3’11”
4’1
Height(ft)
Part no. 1902481 Issue 2 10/10
Normal PEF values in children correlate best with height; with increasing age, larger differences occur between the sexes.
These predicted values are based on the formulae given inLung Function by J.E. Cotes (Sixth Edition),
adapted for Mini-Wright peak flow meters by Clement Clarke.
Edinburgh Way, Harlow, Essex CM20 2TT UKTelephone: +44 (0)1279 414969 Fax: +44 (0)1279 456304www.clement-clarke.com e-mail: [email protected]
