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What does a peak expiratory flow rate measure?
My 11-year-old son will have his peak expiratory flow rate measured. Will this show if he would need an inhaler?
3 Answers
Air flow in airways.
This measures the maximum expiration in a short period of time which can indicate away obstruction must common being asthma. If he gets an albuterol inhaler and this number improves he has reversible obstruction meaning asthma
Yes, that's the best way to diagnose asthma is with spirometry which measures the peak expiratory flow with and without a bronchodilator.