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NORMAL PEAK FLOW PORTABLE

you've have had a recent acute asthma attack (keep recording until readings are normal and your symptoms settle down).

you know you've been exposed to one of your asthma triggers.

you have a runny nose or feel a cold coming on.

When you are well and your peak flow reading is at its best and steady, you don't have to use your meter every day.

If your treatment is changed, keep using your peak flow meter to monitor any changes in your peak flow.

If your peak flow values are low, your healthcare provider may change your inhalers or increase the number of puffs you are taking.

If your peak flow values are high, your healthcare provider may tell you to reduce your inhalers.

You may choose to either make a graph or keep a diary of these readings and how you feel.

PMID 13846051.To begin with you should take your peak flow readings before using your inhalers every morning and again in the evening, for 2 weeks. Your healthcare provider can then see if your readings are as high as they should be.

NORMAL PEAK FLOW PORTABLE

"Maximum forced expiratory flow rate as a measure of ventilatory capacity: with a description of a new portable instrument for measuring it". ^ WRIGHT BM, McKERROW CB (November 1959)."How can I determine a normal peak flow rate for me?". "British Guideline on the Management of Asthma - Annex 8: Personal Asthma Action Plan" (PDF). ^ Scottish Intercollegiate Guidelines Network The British Thoracic Society (July 2007).Wright values may be converted to the EU scale using the following formula: EU = 50.356 + 0.4 W + ( 8.814 × 10 − 4 × W 2 ) − ( 1.116 × 10 − 7 × W 3 ) : CS1 maint: DOI inactive as of December 2022 ( link) Please see below click on below link for peak flow normal values chart. In 2004 the UK switched from the original Wright scale to the newer, more accurate European scale. The purpose of this peak flow protocol is to allow Healthcare Support Workers to. NHANESIII reference values provided by the US Centers for Disease Control (CDC).There is a wide natural variation in results from healthy test subjects. Some examples of Reference Values are given below. There are a number of non-equivalent scales used in the interpretation of peak expiratory flow. More recently, medical calculators have been developed to calculate predicted values for peak expiratory flow. For this reason, tables or charts are used to determine the normal value for a particular individual. Various reference values have been published in the literature and vary by population, ethnic group, age, sex, height and weight of the patient. 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. It is important to use the same peak flow meter every time. When peak flow is being monitored regularly, the results may be recorded on a peak flow chart. When monitoring is recommended, it is usually done in addition to reviewing asthma symptoms and frequency of reliever medication use. However, it can be useful in some circumstances.Ī small portion of people with asthma may benefit from regular peak flow monitoring. It is classically reduced in obstructive lung disorders such as asthma.ĭue to the wide range of 'normal' values and the high degree of variability, peak flow is not the recommended test to identify asthma. Measurement of PEFR requires training to correctly use a meter and the normal expected value depends on the patient's sex, age, and height. From changes in recorded values, patients and doctors may determine lung functionality, the severity of asthma symptoms, and treatment. Peak flow readings are higher when patients are well, and lower when the airways are constricted.