Registered Nurses' Association of Ontario

Nursing Best Practice Guidelines

Determining Asthma Control

Indicators of Acceptable Asthma Control

Parameters  Frequency/Value
Daytime symptoms  <4 times/week
Night-time symptoms  <1 time/week
Need for short-acting B2 -agonist  <4 times/ week (apart from one dose/day before exercise)
Physical Activity  Normal for age
Exacerbations  Mild, infrequent
Work/school absence  None
FEV1 or PEF rate  > 90% personal best
PEF diurnal variation  < 10-15% variation

FEV1: Forced expiratory volume in 1 second; PEF: Peak expiratory flow
[Adapted from Canadian Asthma Consensus Guidelines – Update, 2001] (see Boulet et al, 1999)