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A small portion of people with asthma may benefit from regular peak flow monitoring. When monitoring is recommended, it is usually done in addition to reviewing asthma symptoms and frequency of reliever medication use. [2] When peak flow is being monitored regularly, the results may be recorded on a peak flow chart.
MMEF or MEF stands for maximal (mid-)expiratory flow and is the peak of expiratory flow as taken from the flow-volume curve and measured in liters per second. It should theoretically be identical to peak expiratory flow (PEF), which is, however, generally measured by a peak flow meter and given in liters per minute.
Pulmonary function testing is a safe procedure; however, there is cause for concern regarding untoward reactions and the value of the test data should be weighed against potential hazards. Some complications include dizziness, shortness of breath, coughing, pneumothorax, and inducing an asthma attack.
An increase in FEV1 (or forced expiratory volume in the first second of a forced exhalation) of >200ml is considered a positive result. 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 ...
Severe acute asthma can be diagnosed by a primary care physician (PCP). A PCP will ask questions in regards to symptoms and breathing; they will also ask if fatigue or wheezing has been experienced when breathing in or out; and also test using a peak expiratory flow and an oxygen saturation.
A spirometer is a device used to measure timed expired and inspired volumes, and can be used to help diagnose asthma. A peak flow meter is a hand-held device which measures how fast a person can exhale – peak expiratory flow rate (PEFR) – and is a reliable test for occupational asthma. [16]