Respiratory Function – APPENDIX II

PEFR X100 L.MIN
VC LITRES
FEF X100 L.MIN
HEIGHT (cm)

Reference values for vital capacity (VC)
Peak expiratory flow rate (PEFR)
Maximal mid-expiratory flow rate (FEF 25-75)

*Polgar G and Promadahat V Pulmonary function testing in
children.
Philadelphia: WB Saunders 1971

Ref. Paediatric Handbook, Ed H. de v Heese ISBN 0 195 7076 3 Oxford:
Univ Press