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Information on Normal Peak Flow Meter
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A spirometer is an apparatus for measuring the volume of air inspired and expired by the lungs. It is a precision differential pressuretransducer for the measurements of respiration flow rates. The spirometer records the amount of air and the rate of air that is breathed in and out over a specified time. The Spirometer and attached flow head function together as a pneumotachometer, with an output signal proportional to airflow. It was invented by John Hutchinson in 1846.
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Peak flow meter - Wikipedia, the free encyclopedia
A peak flow meter measures the patient's maximum speed of expiration, or peak ... PMID 5438753. - Predicted peak expiratory flow in normal children using Wright-scale
Appendix 3: Tables of normal peak flow values
* Note that the values shown are the average normal values for healthy persons of a given age and height. There will always be a range of normal values; not everyone can be ...
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