Registered Nurses' Association of Ontario

Nursing Best Practice Guidelines

Reference Value for Peak Flow Rate

These reference values for Peak Expiratory Flow rates are provided as an example only.  They are not applicable for every PEF meter.  Use the reference values provided by the manufacturer for the specific PEF meter being used.

Height (cm) Male (L/min) Female (L/min)
110   - 145
115 160 157
120 175 170
125 191 184
130 208 199
135 226 216
140 247 234
145 269 253
150 293 274
155 319 396
160 348 321
165 379 347
170 414 376
175 451 407
180 491 441

Reference: Canadian Association of Emergency Physycian (2002).  Guidelines for Emergency Management of Paediatric Asthma. 
Available: www.caep.ca/002.policies/002-01.guidelines/paediatric-asthma/paediatric-asthma.htm