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To interpret the significance of peak expiratory flow measurements, a comparison is made to reference (normal, predicted) values based on measurements taken from the general population. Various reference values have been published in the literature and vary by population, ethnic group, age, sex, height and weight of the patient.
Spirometry (meaning the measuring of breath) is the most common of the pulmonary function tests (PFTs). It measures lung function, specifically the amount (volume) and/or speed (flow) of air that can be inhaled and exhaled.
A spirometer is the main piece of equipment used for basic Pulmonary Function Tests (PFTs). Lung diseases such as asthma, bronchitis, and emphysema may be ruled out from the tests.
Spirometry. Spirometry includes tests of pulmonary mechanics – measurements of FVC, FEV 1, FEF values, forced inspiratory flow rates (FIFs), and MVV. Measuring pulmonary mechanics assesses the ability of the lungs to move huge volumes of air quickly through the airways to identify airway obstruction.
Traditional incentive spirometers can be more challenging for children due to compliance and submaximal effort. [9] Age-appropriate devices including whistles, pinwheels, and bubble wands should be considered. [10] These toys and activities reinforce proper breathing mechanics by stimulating deep inhalation and prolonged exhalation. [citation ...
Output of a spirometer. Vital capacity (VC) is the maximum amount of air a person can expel from the lungs after a maximum inhalation.It is equal to the sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume.
Bear in mind, however, that this number does not apply to children, and that it can differ depending on the patient's native result; small patient's with pulmonary fibrosis, restrictive lung disease etc. will have a measurably lower FEV1 than healthy average-sized adults. This can give a false positive result of the test.
The first application of this technology has been developed to measure spirometry by PneumaCare Ltd (www.pneumacare.com), The device - PneumaScan has been developed by PneumaCare in partnership with Cambridge University, Addenbrookes NHS Hospital Trust and Plextek Limited (a leading UK device specialist consultancy). It is capable of recording ...