Vitalograph Child Peak Flow Meter 43703

 

Vitalograph Child Peak Flow Meter - 43703 

 

The simple, accurate way to monitor asthma

100% is the asthmatic's best. The yellow zone will typically be set to start at 80% of the asthmatic's best while the red zone will typically start at 60%.

Variability of PEFR of greater than 20% should alert the asthmatic to a possible asthma attack.