Definition of Meter, peak-flow Meter, peak-flow: This hand-held
device measures air flow (how fast air is blown out of the
lungs). Patients can use peak-flow meters to measure their own
air flow regularly. The use of a peak-flow meter allows patients
to obtain a much earlier indication of an oncoming attack, for
example, of exercise-induced asthma, a type of asthma typically
triggered by exercise. The "peak flow" refers to the maximum
flow rate of air breathed out during forced expiration.Source:
MedTerms™ Medical Dictionary Last Editorial Review: 6/14/2012
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